Mad Maths: Book 3 - Ages 10-12

Mad Maths r o e t s Bo r e

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Book 3

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p ok u for S 10 to 12 year olds

© ReadyEdPubl i cat i ons Stimulating problem solving •f orr evi ew p ur poses onl y•

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activities for students aged 10 to 12 years.

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Written by Greg Mitchell. Illustrated by Terry Allen. © Ready-Ed Publications - 2001

Published by Ready-Ed Publications P.O. Box 276 Greenwood WA 6024 Email: info@readyed.com.au Website: www.readyed.com.au COPYRIGHT NOTICE Permission is granted for the purchaser to photocopy sufficient copies for noncommercial educational purposes. However this permission is not transferable and applies only to the purchasing individual or institution.

ISBN 1 87526 887 7

Teachers` Notes Mad Maths 3 Background

Mad Maths is a problem solving based set of maths activities for primary students. The basic aim of the series is to cloak the cognitive processes involved in problem solving in an attractive, enjoyable exterior.

The activities are often fun ... mad even, but the basic underlying principles are sound.

Year LLevels evels

r o e t s Bo r e p ok u S Calculators ... and other things

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Ordering these activities according to difficulty is extremely hard to do because student readiness for problem solving relies greatly upon their previous experiences and how the material is presented in the classroom. Similarly, it is hard to classify these books according to year level. Basically, Book 1 is framed for junior primary, Book 2 for middle primary and Book 3 for upper primary. These levels are not prescriptive, thus materials should be selected to suit the student, group or class.

The aim of Mad Maths is to develop problem solving skills rather than other, more mechanical number skills.

Any aid which assists in getting the problem solved is to be encouraged as the process is much more worthwhile than the answer in this case.

Calculators, blocks, counters, squared paper, pieces of paper to draw on and indeed anything that helps the process of problem solving should be encouraged and made available.

To get the best out of Mad Maths

© ReadyEdPubl i cat i ons •f orr evi ew pur posesonl y•

Each Mad Maths page has three parts to it: 1. The P roblem Problem Read through the problem with the student, group or class you are using it with.

Whilst reading for meaning is a very important skill major emphasis here is problem solving skills not reading. So, ensure that all students understand and are fully aware of the problem presented.

Discuss the problem before progressing to the questions, perhaps developing your own questions before moving on.

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2. The Questions Ensure that all the students understand the question and its context before they tackle the answer. The benefits flow from the process not the answer. In fact many students will have difficulty in framing a form of attacking the problem. Discussing the questions helps overcome this.

Independence will develop with experience.

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3. Madness ... The Extension The final task adds a further fun dimension to those on the page. These activities may not be totally maths orientated but they lend an enjoyable end to a maths session.

The ‘Madness’ boxes are intended to be optional.

Assessment

In assessing these activities it is essential to consider more than just the answers.

“Did the student understand the problem?” is probably the most important question to be asked and evaluated. Questions about computational accuracy are of secondary importance ... but important nevertheless.

Do not forget to evaluate your own presentation of the material ... using materials such as this as ‘busy work’ may indeed cause more work than was intended.

The curriculum references and outcome statements on page 3 are linked to the document: “Mathematics - a curriculum profile for Australian schools”.

Published by Curriculum Corporation (© 1994) 141 Rathdowne St. Carlton, Vic, 3053 Page 2

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Contents Worksheet

Curriculum Strand: Sub-Strand: Learning Outcome

Page

Teachers’ Notes Number: Mental Computation 4.15: Calculates simple addition of whole numbers.

Number: Applying Numbers 4.14: Calculates percentages and amounts of profit for involving money.

Number: Applying Numbers 4.14: Selects appropriate operations for solving situations involving time.

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Chance and Data: Interpreting Data 4.27: Reads information provided on axes of bar graphs to compare data.

Number: Written Computation 4.16: Divides and multiplies amounts of money to calculate percentage.

Number: Equations 4.13: Solves simple equations expressed as a word problem.

Number: Applying Numbers 4.14: Decides what needs to be calculated in order to solve a word problem.

Number: Applying Numbers 4.14: Selects appropriate operations to solve word problems.

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Measurement: Measuring 4.19: Calculates and compares measures of time and distance in word problems.

Measurement: Using relationships 4.22: Explores practical situations where measurement of area is required.

Number: Applying Numbers 4.14: Selects appropriate operations for situations involving whole nos, percentages and time.

Chance and Data: Organising Data 4.25: Classifies and organises data into meaningful categories.

Measurement: Time 4.21: Determines duration of time from schedules and timetables.

Number: Applying Numbers 4.14: Selects appropriate operations for solving situations involving whole nos.

Space: 4.9: Visualises and experiments with diagrams and spatial features to create new 2D shapes.

Space: 4.7b: Interprets drawings of 3D shapes and investigates surface area.

Number: Applying Numbers 4.14: Selects appropriate operations to solve word problems.

Number: Written Computation 4.16: Divides & multiplies whole nos and amounts of money to calculate percentages.

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Number: Mental Computation 4.15: Mentally calculates word problems involving whole numbers and money.

Number: Written Computation 4.16: Divides and multiplies amounts of money to calculate percentages.

Number: Applying Numbers 4.14: Explores nos & combinations of sets of objects to solve word problems.

Measurement: Time 4.21: Investigates concept of times and schedules using number problems.

Chance and Data: Interpreting Data 4.27: Reads and interprets data from a table; calculates percentages.

Chance and Data: Displaying Data 4.26: Determines the mean, frequency and range of a set of scores from a table.

Number: Mental Computation 4.15: Mentally calculates word problems involving whole nos, time and money.

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Number: Mental Computation 4.15: Mentally calculates word problems involving whole nos, time and money.

Number: Applying Numbers 4.14: Selects appropriate operations to solve word problems.

Number: Number Patterns 4.12: Explores patterns and combinations of numbers to solve a word problem.

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Space: 4.8: Locates points on a grid by reading coordinates.

Number: Mental Computation 4.15: Mentally calculates word problems involving whole numbers and money.

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Number: Written Computation 4.16: Divides and multiplies amounts of money to calculate profit.

Number: Mental Computation 4.15: Mentally solves addition number problems involving two-digit numbers.

Chance and Data: Organising Data 4.25: Calculates & compares a set of scores to determine range & mean.

Chance and Data: Displaying & Summarising Data 4.26: Calculates measurements based on a given rate; compares data.

Chance and Data: Displaying & Summarising Data 4.26: Displays data over a period of time based on a given frequency.

Chance and Data: Interpreting Data 4.27: Interprets a table and uses information to calculate percentages.

Number: Equations 4.13: Finds missing numbers to satisfy a numerical constraint.

Number: Written Computation 4.16: Divides & multiplies whole nos & amounts of money to calculate percentages.

Number: Written Computation 4.16: Divides & multiplies whole nos & amounts of money to calculate percentages.

Number: Equations: 4.13: Investigates and records different ways of solving a word problem. .

Answers

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Worksheet 1

Betty Big Brain drives her teacher, Mr Slack, crazy. Every time he sets her a maths problem she finishes it in next to no time.

To keep her busy one day Mr Slack told Betty to add up all the numbers from one to a hundred.

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“Easy!� said Betty. “I’ll be back in a minute.�

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“How about adding the numbers one to one thousand?� “Easy!� said Betty.

Questions

What drives Mr Slack crazy? _________________________________________________

Š ReadyEdPubl i cat i ons What is the total of all numbers 11 to 20? _________________ •f orr evi ew pur posesonl y• What is the total of all numbers 1 to 10? _________________

What is the total of all numbers 21 to 30? _________________

What is the total of all numbers 41 to 50? _________________ What is the total of all numbers 51 to 60? _________________

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What is the total of all numbers 61 to 70? _________________

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What is the total of all numbers 31 to 40? _________________

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And she was. Mr Slack scratched his head.

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What is the total of all numbers 71 to 80? _________________ What is the total of all numbers 81 to 90? _________________ What is the total of all numbers 91 to 100? _________________ What is the total of all the numbers 1 to 100?

Betty did the sum by adding 99 + 1, 98 +2, 97 + 3, etc. _________________

13.

What is the total of all numbers to 1000 (the quick way)? _________________

Madness Write down ten things you would like to do if you finished all your work.

Give the list to your teacher ... if you dare!

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Worksheet 2

Crazy Chris the carpenter made a wooden car with wooden wheels and a wooden engine that wouldn’t go!

Š ReadyEdPubl i cat i ons He took itf to the local markets where her sold it s toe as boy o called Chip who saw • o r r e v i e w p u p o n l y • through it right away and paid him a dollar for it in 15 coins.

Questions

From what was Chris’s car made? ____________________________________________

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“Wouldn’t you know it!� Chris sighed.

How much did Chip pay for the car? __________________

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What coins did Chip give Chris? ______________________________________________ If it cost Chris 47 cents to make the car, how much profit did he make? $ _________________

What percentage profit did he make? _________________ %

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If Chip painted the car and sold it for two dollars to his mate Chop, how much profit would he make? (Amount and percentage.) $ _________________

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Madness

What form of transport do you like the most?

Draw you coming to school in it.

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Worksheet 3

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If he takes the rocket ferry there and back he only takes 30 minutes.

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When Muscles McMidget goes to ballet lessons he usually catches the local rocket ferry there and walks home, or the other way around. No matter which way he goes, it takes one hour.

“I should walk both ways to get fit,�

Muscles admitted, “but I don’t know how long it would take.�

Muscles is now appearing in a new ballet called ‘Swamp Lake’.

Š ReadyEdPubl i cat i ons •f orr evi ew pur posesonl y• Questions

1. Where does Muscles go to? _________________________________________________

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How long does it take him to go on the ferry and walk? _________________

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How long does it take using the ferry both ways?__________________ How long does it take using the ferry one way? _________________

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How long would it take Muscles to walk one way? ___________________

How long would it take Muscles to walk both ways? __________________

If ballet lessons started at 5 o’clock when would Muscles have to leave to walk there? _________________

To take the ferry there? _________________

8.

If it costs Muscles 5 cents a minute to travel both ways by ferry how much would he save over five days if he walked? _________________

Madness

Draw the rocket ferry or you at ballet lessons.

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Worksheet 4

The students at Monster Primary School enjoy Grungeburgers for lunch.

Some students like them more than others.

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Muscles Monster wanted to know what type of Grunge they used in the Grungeburgers. “Bean Grunge,� said the cook.

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Number 75 of Monsters 50 25

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The year 6 class decided to do a Grungeburger survey to see which of the classes in the school liked Grungeburgers the most.

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Monsters Who Like Grungeburgers

Š ReadyEdPub1l i c t o4ns 2a 3i 5 6 Year Level •f orr evi ew pur posesonl y•

“I don’t care what it’s been.

What is it now?� asked Muscles.

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Which year level liked Grungeburgers the most? __________________

What was the range of the scores? ___________________

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What was the average for all the classes? __________________

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Which year level liked Grungeburgers the least? __________________

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If Grungeburgers were worth $1.50 and the canteen sold 86 on average each day, how many would they sell in a week? _________________

How much would the Grungeburger trade be worth per week? __________________ If this was 25% of the canteen trade each week, how much was the total trade? __________________

6.

Do a survey of your class as to the best liked lunch. Check out if your class likes are the same as the rest of the school. Make a graph of the results.

Madness

Put together a recipe for Grungeburgers. Put in lots of interesting things.

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Worksheet 5

Rotten Rat’s lunch consisted of a rotten banana, a slime and salad sandwich and a can of ‘Belch a Burpa’.

Š ReadyEdPubl i cat i ons “I wonder how much I paid for the slime sandwich?â€? thought Rotten Rat. •f orr evi ew pur posesonl y•

It cost him $3. He paid 60 cents more for the banana than he did for the can of Belch a Burpa and 45 cents more for the sandwich than the banana.

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What did Rotten Rat have for lunch?

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How much did it cost? __________________

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How much did the banana cost? __________________ How much did the drink cost?__________________

How much did the slime and salad sandwich cost? _________________ What percentage of the price is the sandwich? __________________ What percentage of the price is the can of drink? _________________ What percentage of the price is the banana? __________________

Madness

Draw your favourite lunch. What percentage of it are you going to eat?

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Worksheet 6

There is something about parents that always makes them have trouble knowing their own age. They always say they have a silly age like 16 or they say something like Shug’s dad did.

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What type of answer is that to ‘how old are you’? “When you divide my age by 2, 3, 4 or 6 there is always one left over,� Shug’s mum replied when asked her age.

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“Well a few years ago you were two and I was 34 but now I’m five times older than you.�

Gee whiz, what an answer!

I wish they wouldn’t say things like this as my mum always told me that every parent is 21 years old always!

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How old do your parents say they are? _______________________________________ How old is Shug’s dad? __________________ How old is Shug’s mum? _________________

birthdays in his family? __________________

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If Shug is an only child and he is 8, how many candles will he need for all of the

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How many would he need if they all have their birthday on the same day?

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__________________

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Make up a problem for your own age. Try it out on a friend.

________________________________________________________________________ ________________________________________________________________________

6.

If Slam is in year 5 and her father says “I was five times your age when you started school, now I’m three times it,� then how old is Slam’s dad? _________________

Madness

What would be the greatest present your parents would want?

Draw it. Check out your guess with them.

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Worksheet 7

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At Francois’s Fast Friends pet shop Francois had a sale of racing snails.

“They are all winners,� Francois told his customers. “If they lose I eat them.�

Francois’s sale snail price is $4. On the first day of the sale he took $240 for his snails. The next day he dropped the price to $3 and sold twice as many snails. “I am making a fortune,� said Francois. “Everyone is taking the snail bait!�

Š ReadyEdPubl i cat i ons •f or evi e pfirst ur po sesonl y• How many snails didr Francois sellw on the day? __________________

Questions 1.

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What is Francois selling at his sale? __________________________________________

How much did Francois lower his price by on the second day of the sale?

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What is this as a percentage of the original price? __________________ How many snails did Francois sell on Day Two? __________________

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How much money did Francois make on Day Two? ___________________

How did this compare with Day One? ________________________________________ ________________________________________________________________________

6.

If Francois had 1000 snails to sell, how many would he have left after his sale? __________________ If he sells the rest at $2 each how much money will he have made over all? __________________

Madness

Have a snail race and write up a newspaper report of the event.

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In television’s Mad Championship Wrestling there are sixteen mad wrestlers entered in a ‘Knockout’ competition. Each wrestler wrestles one other wrestler in the first match and if they win go on to the next match with the loser ‘dropping out’.

This keeps happening until only one winner is left.

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Worksheet 8

“We all get a kick out of wrestling,� said Jack Hammer.

Questions 1.

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How many wrestlers are in the championships? _________________

Š ReadyEdPubl i cat i ons How • many arer finished after the round? _________________ f o r ev i e wfirstp ur p osesonl y• How many are in the first round? __________________

What percentage is this? __________________

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How many rounds does it take to find a winner? __________________ If Strangle McGurk lost in the third round what place would he have come? (1st, 2nd ...?)

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If each wrestler is paid $100 for a first round win, $200 for a second round win and so on, how much would the winner win? _________________

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Draw up a list of sixteen good names for the wrestlers. (Don’t be sexist!)

________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________ Then on the back of this sheet draw up a match ... losers and all!

Madness

Draw yourself as a wrestler. Give yourself a killer of a name!

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Worksheet 9

Serge the human fly was crawling up the side of the world’s tallest fence outside the world’s largest rubbish dump.

Š ReadyEdPubl i cat i ons •f orr evi ew pur posesonl y•

The fence is 200 metres high. Serge climbed 40 metres every 30 minutes but was blown back by the wind 30 metres in the next 30 minutes whilst he was getting his breath back.

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How tall is the fence Serge is climbing?__________________

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Finally after a struggle and quite some time he got to the top of the fence and launched himself at the great mound of rubbish before him, only to be knocked flat by Frank the human flyswat.

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How far does Serge climb in the first 30 minutes of each hour? __________________ How far is he blown back by the wind?__________________

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How much gain does Serge make each hour? __________________ How long does it take Serge to reach the top? __________________

Draw a diagram of Serge’s journey on squared paper to check your answer.

Was your answer correct? _________________

Madness

Invent your own superheroes.

Draw them, name them and describe them if you dare.

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Worksheet 10

Ted Tiler has incredible tiles with great patterns and pictures on them. He likes to think of his tiled floors as works of art.

For his last rectangular floor he charged $5000.

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Maxine Million thought she would like her room covered. It was twice as long and twice as wide as the last one Ted did.

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“Will that cost twice as much?�

Maxine Million asked. “No way!� said Ted.

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Questions

How much did Ted’s last floor cost? __________________

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What shape was it? _________________

If Ted’s last room was 5 metres x 2 metres, what was the charge per square metre?

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If there were 4 tiles to every square metre how many tiles did he use? ________________ What would Ted charge for a floor twice as large as the last one he did? __________________

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Using squared paper draw Ted’s last floor (5 x 2). In a different colour draw in Maxine’s room. (Use Ted’s as the corner.)

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How much will Ted charge Maxine for the room? If there are 4 tiles to every square metre, how many tiles will Maxine’s floor need? __________________

Madness

Design your own tile floor. You can use colours, patterns, drawings or whatever you like.

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Worksheet 11 “I’m rich! I’m rich� cried Cecil Dagg after he had read his mail. “My Uncle Snudge has left me $250 000 to spend.�

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And to make matters worse Uncle Snudge wants Cecil to buy everything out of the ‘Daily Bike’ newspaper. “No sweat!� beamed Cecil as he headed off for the nearest newsagent.

Questions 1.

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How much did Uncle Snudge leave Cecil? _________________

If the shops are open for 12 and a half hours how much must Cecil spend per hour

Š ReadyEdPubl i cat i ons What percentage ofr $1 million isw Unclep Snudge’s _________________ •f or e vi e ur pmoney? ose sonl y• to get rid of the money? __________________

Pretend you are Cecil. Get the morning newspaper and see if you can spend $250 000 to the last cent. Write down the items and the cost of them.

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The only trouble is that Uncle Snudge insists that Cecil spend every cent of the $250 000 on one day, to the very last cent.

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If you couldn’t spend your money on land or houses (it takes more than a day to fix up the sale) would it change your spending pattern? If so, on what would you spend the money? ________________________________________________________________________ ________________________________________________________________________ ________________________________________________________________________

Madness

On what would you like to spend $250 000?

(It doesn’t have to be in the paper.) Make a list.

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Worksheet 12

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“Gee, that’s about the three thousandth ad for soap powder we’ve had on TV today,� said Smiley. “They drive me crazy.� “Yeah,� agreed Stinker. “I wonder how many ads are on TV in an hour?�

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“Buy Slamo!� screamed the advertisement on Channel 6.3. “It’s the soap powder that beats the suds out of the rest!�

Questions 1.

Write down ten television commercials you can remember. _________________________ ________________________________________________________________________

Š ReadyEdPubl i cat i ons ________________________________________________________________________ •f orr evi ew pur posesonl y• ________________________________________________________________________

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What types of things do commercials sell? _____________________________________

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Make up four categories of ads: _______________________

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_______________________

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Spend half an hour watching commercial television.

Time and count the ads and put them into categories.

How many ads were there in the half hour? _________________

What categories could they be put into? _______________________________________ ________________________________________________________________________

5.

How long do the ads take out of an hour? _________________

Madness

Check out the commercials at night time and compare the differences.

Write your own ad and perform it.

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Worksheet 13

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Stragglers Street Grubby School Yucky Smells Cooking Show Cricket: Bashers vs Smashers. One day match. Morning session.

News & Weather Afternoon Movie: ‘How Itchy My Armpits’.

Cricket: Bashers vs Smashers. Afternoon session.

Stragglers Street Grubby School The Amazing Adventures of an Absolute Ant News Headlines Yucky Smells Cooking Show Dr What Video-ideo Music Show News The Baddies The 7:43 and 30 Seconds Report The Six Freds. Comedy.

The Monkeys from Banana State Late News and Weather Sports Night: Reviews of the weekend in sport.

Big City for Little People Mad Mad Music until dawn.

Close

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8:00 9:00 9:30 10:30 12:30 12:45 2:00 4:00 5:00 5:30 5:58 6:00 6:15 6:45 7:00 7:30 7:43 8:00 9:10 10:00 10:05 10:45 11:25 6:20

Channel 8-7

Š ReadyEdPubl i cat i ons Questions orr e v i ew p ur posesonl y• 1. What is• on f Channel 8-7 at 10.30am? ________________________________________ Which show takes up the most time? _________________________________________ How long? __________________

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In minutes? _________________

What is the afternoon movie? _______________________________________________ For how long does it go? __________________

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Which shows are repeated? ________________________________________________ ________________________________________________________________________

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How long is the ‘7.43 and 30 Seconds Report’ on for? _________________ How long in hours and minutes does Channel 8-7 broadcast for? __________________ Which show goes for only 15 minutes? _______________________________________ Which shows go longer than an hour? ________________________________________ ________________________________________________________________________

Madness

Invent your own TV show. Describe it like they do in the TV guides.

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Worksheet 14

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The Racketeers Racket Club has a free lesson every fifth night.

Tonight is Monday night and tomorrow night (Tuesday) is a free lesson night.

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Jodie Bashem wants to learn to play tennis because she likes smashing things around. Jodie is only able to have a lesson every fourth night.

“I wonder when I get a free lesson?� Jodie thought as she smashed the ball over the fence for the 20th time that night.

Š ReadyEdPubl i cat i ons Questions 1. What• sport does _________________ Why? ______________________ f o rJodie r eplay? vi e w pur pos es onl y• ________________________________________________________________________ When does Jodie have her lessons? __________________________________________

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When is the free lesson? ___________________________________________________ When is Jodie’s next lesson? _________________

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When is the next free lesson? _________________

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When will Jodie get her free lesson? __________________________________________ How many free lessons would Jodie get in six weeks? __________________ If it cost $11.20 a lesson, how much would Jodie pay for four lessons? _______________ How much would it cost Jodie for four weeks lessons (including the free lessons) if she starts on Monday and the free lessons start on Tuesday (at $11.20 per lesson). __________________

Madness

What sports would you like to try out?

Make a list. Include incredible ones like Bungy Jumping, etc.

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Worksheet 15

Once Rotten Rat kept giant stink bugs and sold them to people who liked smelling (badly).

He kept six of them in square paddocks like this:

Giant stink bugs die if they don’t live in a square pen.

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“I don’t understand it,� said Rotten Rat. “People just don’t stink the way they used to.�

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But the bottom dropped out of the stink bug market so he only needed two square paddocks. He ripped out 6 fences to organise this.

How many bugs did Rotten Rat have to start with? _________________

If Rotten Rat made 220% profit on each of his stink bugs and it cost him $20 to raise

Š ReadyEdPubl i cat i ons •f orr evi ew pur posesonl y•

them, how much would they sell for? __________________

4.

If stink bugs could live in rectangles how could Rat remove 3 fences to leave three rectangles? Draw the three possibilities below.

5.

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How is Rotten going to remove 6 fences to make 2 pens? Draw the final shape below.

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If each fence costs $23 to make, how much would Rotten’s paddocks be worth as they are? _________________

Madness

What types of animals would you like to keep on a farm?

Draw a sign for out the front of your farm.

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Name:

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Teac he r

Worksheet 16

Cewbs are cute little cube shaped aliens who love to be stacked together.

Š ReadyEdPubl i cat i ons •f orr evi ew pur posesonl y•

One sunny day at the beach 27 little cewbs stacked themselves into a cute cube.

Then along came the Cewb beach patrol and sprayed the outside of the Cewbs with sunblock cream.

Questions

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How many Cewbs are in the cube shape? __________________ How many Cewbs are in each layer? __________________

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“Gee,� said the sunblock sprayer, “I bet I have missed a few sides in this operation.

I hope no cute Cewbs in the cube get cooked!�

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How many Cewbs have every side sprayed? __________________ How many Cewbs have two sides sprayed? __________________ How many Cewbs have three sides sprayed? _________________

How many possible sides are there between all the cubes? __________________ How many sides were sprayed? __________________ Which shape (rectangular prism) of 27 Cewbs would get the most sides sprayed by the beach patrol? _________________

Madness

Design your own cute little 3 dimensional alien like a Cewb.

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Worksheet 17

Joe Worm wants to take his little brother Riggle and his mum and dad to the Big Apple restaurant for a special treat. The only way Joe can earn the money for this is by delivering the ‘Daily Squirm’ newspaper.

Š ReadyEdPubl i cat i ons •f orr evi ew pur posesonl y•

He gets 9 cents a newspaper so he has to deliver lots of papers to earn enough.

Questions

How much does it cost to go to the Big Apple? Adults: __________________

2.

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6.

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Children: _________________

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How much would it cost Joe to take himself and his family? _________________

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How much for one adult and four children? ___________________

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How much does Joe get for each paper? _________________

How many papers would Joe have to sell to earn $1 (or close to)? _________________ How many papers would Joe have to sell to make enough money to take his family to the restaurant? _________________

7.

If Joe earns 15 cents a paper how many would he have to sell to take his family to the restaurant? _________________

Madness

Open a restaurant! What would you call it? What would you sell?

What would it look like? Write a radio advertisement to advertise it.

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Name:

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Teac he r

Worksheet 18

At Crazy Caz’s costume shop she has costumes for any occasion.

She made 440 costumes for her shop in December.

Š ReadyEdPubl i cat i ons f or r e vi e wCazpsaid, ur po s es nmyself l y• “I’ll have• to make some more,â€?

Crazy “But I’ll have to o make a costume During January she sold 25% of her costumes and in February she sold 60% of the costumes she had left. maker’s costume first.�

Questions How many did she sell in January? _________________

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How many costumes did Crazy Caz make? __________________

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How many costumes did she have left at the end of January? __________________

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How many costumes did she sell in February? _________________ How many costumes were sold over all? _________________

How many costumes were left over all? __________________

What percentage of the original 440 costumes did Caz have left? __________________ If Caz charges $6.50 a costume how much money will she make over all? __________________

Madness

What costume would you like to wear?

Draw five costumes for you and your friends.

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Name:

Worksheet 19 Mrs Slippery grows worms for a living.

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One day Mrs Slippery had four customers.

One bought half a can of worms plus two more.

The next customer bought half of what was left plus an extra two. The third customer bought half of what was left and another two and the last customer bought the worm that was left.

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“Worms are good,� Mrs Slippery tells her customers, “Especially on toast.�

Š ReadyEdPubl i cat i ons •f orr evi ew pur posesonl y• Questions “Do you want me to open another can of worms?â€? asked Mrs Slippery.

What does Mrs Slippery sell?__________________

What did the last customer buy?_________________ How many worms are in a can of worms? _________________

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How many customers did Mrs Slippery have? __________________

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If each customer bought the same amount of worms how many would they have got each? __________________

6.

7.

If Mrs Slippery charged 5 cents a worm how much did it cost the: First customer? _________________

Second customer? _________________

Third customer? _________________

Fourth customer? __________________

If it cost Mrs Slippery 50 cents to produce all the worms in a can how much profit does she make? _________________

Madness

Make up a worm food recipe. Make the worms the main ingredient.

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Teac he r

Worksheet 20

Rags and Roj sell ‘Smile’ magazine in the city each weekend.

Last weekend they were paid $65. From that money they had to pay the newsagent $39 for the magazines. They split the profits equally. They also won a prize for being great ‘Smile’ sellers and got to go to a concert to see the ‘Smile Rats’ band.

Š ReadyEdPubl i cat i ons At the concert they were in the second row. There were 35 seats in the front row. •f orr evi ew pur posesonl y• Rags counted 35 rows in the hall. “Gee, I wonder how many people are here?â€? he said to Roj. “I dunno,â€? Roj answered. “A lot.â€?

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Questions

How much did Rags and Roj get paid last week? ___________________

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How much did they pay to the newsagent? __________________

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How much profit did they make altogether? __________________ How much did they make each? __________________

How much did they earn per day? __________________

How many people were at the concert if all the chairs were filled? ___________________ If Rags and Roj took $65 for ‘Smile’ at $1.25 each, how many magazines did they sell? __________________

Madness

You are going to see your favourite band, group, singer or sports star. Who are they?

What will they do? Where will you get their autograph? Write it all down.

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Name:

Worksheet 21

Ms Heavy’s maths class have made rings to be sold at the school bazaar. Each ring has two different colours stitched around it. Ms Heavy has six different colours she can use - red, yellow, blue, green, pink and orange, which means she can make lots of different combinations of colours.

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Pete Punk found out lots of different combinations of places he can wear the rings.

Š ReadyEdPubl i cat i ons Questions •f orr evi ew pur posesonl y• 1. How many rings is Pete Punk wearing? __________________ 1.

2.

What are the colours available? _____________________________________________

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3.

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________________________________________________________________________ What are the possible combinations of colours? ________________________________

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________________________________________________________________________

4.

5.

6.

At $1.50 each what would Pete Punk owe? _________________

Ms Heavy’s class made two gross of rings. How many is this? __________________ Pete Punk has four different dyes for his hair - pink, blue, green, and yellow. He colours it two different colours at once.

How many different combinations can he have? _______________________________ ________________________________________________________________________

Madness

What would you look like with multi-coloured hair. Draw yourself.

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Worksheet 22

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Henry earns $18 an hour for his normal 40 hours a weeks and gets one and a half times that for any overtime he works.

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Teac he r

Henry Heavy Duty Crane has a job in the pie factory putting the pattern around the outside of pies and pasties. Henry likes his job apart from getting a hot foot sometimes.

Last week Henry worked 44 hours and 30 minutes.

The boss said he should get faster at his work.

Š ReadyEdPubl i cat i ons “Step on it Henry!â€? he •f orr evi ew pur posesonl y • yelled.

Questions How much does Henry earn an hour? ___________________

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What does Henry do in the pie factory? ______________________________________

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How much does he earn in a 40 hour week? _________________

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5.

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What would Henry earn for four hours overtime? ___________________ How much did Henry earn last week? ___________________

If Henry steps on 40 pies an hour how many pies does he step on in an eight hour day? __________________

6.

How much would Henry be paid per pie to earn exactly $18 an hour if he presses 40 pies an hour? _________________

Madness

Think up your best ever pie - sweet or savoury.

Draw up an advertisement for your pie.

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Worksheet 23

Maggot caught 50 flies on his flywire screen. Some flies had a letter on their abdomen.

There were Z flies, B flies, D flies and S flies, as well as some other flies.

Maggot scratched his head and thought. “I wonder what a fly without wings is called?�

He then smiled. “I know, it’s a walk!�

Š ReadyEdPubl i cat i ons Questions •f or ev i e ur posesonl y• 1. What percentage ofr flies were Zw flies? p __________________ What percentage of flies were D flies? __________________ What percentage of flies were S flies? __________________ What percentage of flies were other flies? __________________

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What percentage of flies were B flies? __________________

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What flies were in the greatest percentage? ___________________ What flies were in the least percentage? __________________

7.

If Maggot swatted the B, D, and S flies what percentage of flies would be killed? __________________

What percentage of flies would have remained? __________________

8.

If there were 25 flies on the wire and 13 of them were A flies, then what percentage of the total flies would they be? __________________

Madness

Catch 50 flies! Identify insects around your school. Then invent your own insect.

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Worksheet 24 Or dinar Ordinar dinaryy Primar Primaryy School

Mad Night School

TESTS

TESTS

Jokes

100%

Mental

82%

Tricks

83%

Maths

85%

Smiling

102%

Laughing

Spelling

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Dictation

95%

Reading

80%

65%

Social Studies

75%

98%

Science

75%

82%

Mucking around Making noises

3%

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Clowning

100%

Cecil Bellybutton goes to two different schools. During the day Cecil goes to Ordinary Primary School, whilst at night time he goes to Mad Night School.

“I need to take my torch when I go to Mad Night School. They teach us lots of good jokes at Mad Night School like ‘Where were the students when the lights went out? In the dark!’�

dyEdPubl i cat i ons QuestionsŠ Rea 1.

•f orr evi ew pur posesonl y•

Which tests did Cecil do best at? ____________________________________________ ________________________________________________________________________

2.

What was his score in Smiling? __________________

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What is wrong with this score? ______________________________________________ ________________________________________________________________________

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4.

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8.

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In what subject was Cecil’s lowest score? _______________________________________

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What was Cecil’s average score at Mad Night School? __________________

What was Cecil’s average score at Ordinary Primary School? __________________ At which school did Cecil do best over all? ____________________________________ What is the difference between the averages? _________________

Without Cecil’s score for ‘Mucking around’, what would be his Night School average? __________________

Madness

Make a list of subjects that you like to study.

Write your own report for each subject and give yourself a percentage out of 200%.

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Worksheet 25 Ms Icicle uses children as special tasters for her icecream line at her factory.

Ms Icicle can only take four out of every twenty children who want the job.

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This year Ms Icicle gave 36 children a turn.

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“There were plenty of children looking for the job but I’m afraid I had to give lots the cold shoulder,� she said.

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Questions 1.

2.

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What does Ms Icicle make? ______________________________

m . u

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How many children can Ms Icicle give the job to? __________________ How many applied? __________________

3.

If Ms Icicle uses 36 children in 6 shifts over a 9 hour working day, for how long would each child work? __________________

4.

If each child was paid $15 a day how much would it cost Ms Icicle for a five day week? __________________

Madness

What job would you like to do to earn money during the holidays?

Write a letter to the employer explaining why you should be hired.

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Name: How did the chicken cross the road?

On a skateboard of course!

Worksheet 26

Two chickens and two hens were standing beside a road wondering how to get across when along came a rat and lent them his skateboard.

The skateboard carries either one hen or two chickens.

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“I wonder how many trips it will take to get all of us over,� said one of the hens who was a dumb cluck.

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“I don’t know,� clucked the other as she watched the two chickens set out on their first journey.

Š ReadyEdPubl i cat i ons •f orr evi ew pur posesonl y•

Questions

Who lent the fowls a skateboard?________________________

__________________

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If the skateboard has 6 sets of 2 wheels how many wheels does it have?

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If each wheel was worth $2.50 how much did the rat pay for the skateboard if the deck

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cost the same amount as all of the wheels? __________________

3.

4.

How many trips will it take the chickens and hens to cross the road? _________________ If rat charges $25 a trip over the road how much do the fowls owe him? __________________

5.

Will the rat get his skateboard back or will he have to risk his life to cross the road? ________________________________________________________________________

Madness

Have a competition to see who knows the most ‘cross the road’ jokes (for chickens and rats). Why did the rat cross the road? To get his skateboard.

Ready-Ed Publications

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Worksheet 27 Lost John Saliva was wrecked on a deserted asteroid with his galah called Mitch and his robot cat. All they had to eat were microfiche and silicone chips. As luck would have it the local asteroid water ran out before too long.

Teac he r

So Lost John Saliva built a good wood rocket so that he could fly to the nearest water asteroid. The only trouble was his new steam powered rocket could only carry two things at once.

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If he left the robot cat with Mitch, the robot cat would eat the galah and if he left Mitch with the microfiche and silicone chips he would eat them. Luckily the cat didn’t like fish and chips.

So Lost John had to figure out a way to move everything and take as few trips as possible.

“I think I’ll be rocketing for ever,� he said as he started out with Mitch on his first trip to the new asteroid.

Š ReadyEdPubl i cat i ons •with f o rr evi ew pur posesonl y• Who was him? _______________________________________________________

Questions 1.

Who was wrecked on the asteroid? __________________________________________

What did they have to eat? _________________________________________________ Why did they have to leave? ________________________________________________

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3.

Why is a steam powered rocket impractical? __________________________________

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________________________________________________________________________

4.

How many trips would it take to move everything successfully? ___________________ Draw the trips below.

Madness

Name ten things you would like to have with you if you were wrecked on an asteroid which has all the food and water you would need.

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Name: Why did the alien cross the galaxy?

Worksheet 28

Because he had lost his Way!

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Teac he r

If this is you then catch our Space Taxi Service!

Š ReadyEdPubl i cat i ons •f orr evi ew pur posesonl y• “We’ll have to change our identification letter one day,â€? admitted Zip Zap Zoom, the

The intergalactic space taxi service has an identification system using the letter X and two digits.

There are 28.5 letters in the alien alphabet.

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Questions 1.

2.

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alien taxi manager. “I wonder how many taxis we’d have if we used all the letters in the alphabet?�

What is the identification letter for all space taxis? ___________________

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If there are two numerals for each identification number then how many combinations can there be? _________________

3.

How many combinations are possible with all the letters of the alien alphabet? __________________

4.

Hard one! How many combinations are there if the plates had three digits? __________________

Madness

Where would you like to go on a space rocket in this world? Or out of this world?

List ten places.

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Worksheet 29

As the alien space craft zoomed closer to Earth the radar scope picked up several new things. “What is that reading?� Commander Zx22 asked his second in command, 21C. “It’s a kite,� 21C replied. “Will we blow it out of the sky?� “No,� said Zx22. “But what is that other reading?� “A football,� said 21C. “Shall I shoot it sir?�

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“No. What is the third reading?� asked Zx22.

D

“No, but what is the fourth reading?�

“In a para what?� asked Zx22.

E

-5 -4 -3 -2 -1

F

1

“Shute,� said 21C.

G

“Oh, I see,� said Zx22. “Shute.�

H

“If you say so!�

I

BANG!

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“An alien in a parachute,� explained 21C.

B C

“A bird. Shall I shoot?�

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J Š ReadyEdPubl i cat i ons Questions orr vbird? i ew p ur posesonl y• 1. What is• thef reading fore the (Letter first) ___________________

What is the reading for the football? __________________ What is the reading for the parachute? __________________ Draw a missing alien bomb at D,-4 on the radar scope.

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What is the reading for the kite? __________________

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7.

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Draw a flying footballer about to take a catch at I,2 on the radar scope.

If alien space ship commanders are more important the higher their last two numbers then how high could Zx22 go? __________________

How many promotions does he need to become supreme commander? __________________ What percentage of a supreme commander is Zx22? (Think about it.) __________________

Madness

Be angry! Which ten things would you like 21C to blow up for you?

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Teac he r

Worksheet 30

Libby is a teddy bear freak. She has $100 to spend on teddy bears and she wants to buy 101 teddy bears.

Š ReadyEdPubl i cat i ons •f orr evi ew pur posesonl y•

“I think I’ll have to do a lot of figuring to figure this out,� Libby said. “I couldn’t bear not to have a hundred new teddy bears.�

Questions

How many $2 bears can you get for $50? _________________

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What are the prices of the bears? ____________________________________________

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4.

If Libby spent $20 on 10 cent bears how many would she have? __________________

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How much would a hundred 10 cent bears cost? ___________________

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A hundred $2 bears? __________________ A hundred $5 bears?__________________

5.

How many of each bear would you get for $100? _________________ 10 cents? _________________

6.

$2 _________________

$5 __________________

How many of each bear would Libby have to buy to spend exactly $100 and get exactly 101 bears? ________________________________________________________ ________________________________________________________________________

Madness

How would you spend $100? Look in the newspaper and make a list.

Better still, make that $1000!

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Type 3

Worksheet 31 Type 4

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Type 1

Type 2

Š ReadyEdPubl i cat i ons •f orr evi ew pur posesonl y•

The Mad Doll Factory made 600 mad clown dolls altogether. They made 120 of type one which sold for $6; 150 of type two which sold for $6.50; 240 of type three which sold for $7.20; and 90 of type four which sold for $8.50.

It cost $4 for the raw materials to make each doll and $500 to make every 600 dolls.

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6.

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8.

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It cost lots of dollars to make lots of dollars at the Mad Doll Factory.

How many types of dolls do the Mad Doll Factory make? __________________

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How much would type one dolls earn? __________________ How much would type two dolls earn? __________________ How much would type three dolls earn?___________________

How much would type four dolls earn? __________________

How much does it cost for all the raw materials? __________________ How much does it cost to make 600 dolls? __________________ How much profit does the Mad Doll Factory earn over all? _________________

Madness

Invent a doll just like you. Draw it. How much would it cost?

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Worksheet 32

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And sometimes they slip and the total of their efforts come to zero, which brother 6 finds a real pain in the neck.

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Teac he r

The six sizzling Smiley brothers like to make acrobatic pyramids in this six shape. Sometimes they even arrange themselves so that the pyramid sides add up to the same amount.

Š ReadyEdPubl i cat i ons •f orr evi ew pur posesonl y• Questions What is the total of all the brothers added together? _________________

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The six sizzling Smiley bothers can make four pyramids where the sides equal 9, 10, 11 and 12. Put in the numbers to complete the pyramids below.

9

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11

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12

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If the pyramid stayed in order how many changes would it take to get brother 6 to where brother 1 is? __________________

Madness

Try and make a six pyramid with your classmates.

Try it kneeling and then standing.

Ready-Ed Publications

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Name:

Worksheet 33

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Tanya Tickle made 124 laps and earned $1.25 a lap. Charlie Chuckles made 148 laps but only raised 75 cents per lap.

Jenny Jet did 205 laps in half an hour.

She earned only 51 cents a lap.

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Teac he r

At the Air Primary School they held a lap-a-thon to raise money for the school’s new airport.

Everyone had to see how many laps they could make of the school sports field in one hour.

Š ReadyEdPubl i cat i ons What was the lap-a-thon for? _______________________________________________ •f orr evi ew pur posesonl y•

Questions 1.

________________________________________________________________________

How much did Charlie Chuckles make? _________________ How much did Jenny Jet make? __________________

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Which person earned the most per lap? _________________

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How much did Tanya Tickle make? _________________

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Which person earned the most over all? __________________ What was the range of money earned? __________________

If the airport needed $1000 spent on it then how much short were these three? __________________

9.

If Charlie Chuckles did 133 laps and earned $101.08, how much was he paid per lap? __________________

Madness

Think up ten crazy ‘a-thons’ to raise money.

Create a poster for the craziest.

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Name:

Worksheet 34

The great Sam Yannis Slippery Snail is the fastest long distance sliding snail in history, smashing all sliding records recently when he slid a fabulous 261 cms in six days.

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Teac he r

In a charity Slip For Orphaned Snails Sam slid 5 cms more each day than he had the day before.

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“Long distance sliding is great for you. It gives you a really strong foot.

The only trouble is that when you get a blow out in your running shoe it nearly kills you,� Sam simpered.

dyEdPubl i cat i ons QuestionsŠ Rea 1.

2.

•f orr evi ew pur posesonl y•

How far did Sam travel in six days? __________________

If he raised $76 per centimetre how much money did he raise for the orphaned snails?

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3.

4.

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How much short of $20 000 was the amount raised? __________________ What was Sam’s average speed each day? __________________

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Fill in the chart of Sam’s daily progress.

DAY

Centimetres covered each day

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1

2

3

4

5

Total covered altogether

6

261 Madness

Think up some crazy long distance or long time marathons.

Check some out in reference books and invent five of your own.

Ready-Ed Publications

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Name:

Worksheet 35

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Gussy Grouch loves to cook special Incredible Exploding Popcorn. It really takes off when you turn the heat on.

When the temperature is 101 degrees it blows the lid off the pot 2 times every minute. At 102 degrees it blows it off 4 times every minute and at 103 degrees 6 times every minute and so on.

Gussy would love to turn the temperature up to 120 degrees but doesn’t know if she can keep the lid on the pot at all.

Š ReadyEdPubl i cat i ons •f orr evi ew pur posesonl y•

“I wonder how many times it would blow off each minute at 120 degrees?� she thought as she got shot in the eye by a flying corn.

Questions

What does Gussy Grouch love to cook? ________________________________________

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At what temperature does the lid blow off twice every minute? __________________

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3.

4.

5.

How many times would the lid blow off at 104 degrees? __________________

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Will the lid stay on at 120 degrees? __________________ Fill in the table.

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Temperature 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 (degrees °) Blow offs per minute

6.

2

4

6

At what temperature will the lid be blown away completely, i.e. 60 times per minute? __________________

Madness

What foods would you like to explode? Make a list of 10 yuck foods.

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Worksheet 36 P

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L

D

F

A

PTS

BASHERS

10

9

1

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178

98

36

SMASHERS

10

9

1

—

196 123

36

BIFFERS

10

8

2

—

109

32

BOPPERS

10

7

3

—

108

76

28

KISSERS

10

5

5

—

104

82

20

PUNCHERS

10

2

8

—

98

103

8

GOUGERS

10

2

8

—

127 136

8

STOMPERS

10

1

9

—

48

4

48

%

GD

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TEAM

After the end of the crash ball season there were two teams on top of the ladder on the same points. No one could tell who should be the leader. Burt Bright, number 23 and a half, thought that you could figure out the winner on percentage of points scored for and against.

Š ReadyEdPubl i cat i ons Questions •f orr evi ew pur posesonl y• 1. What do the abbreviations stand for at the top of each column?

“I don’t know how to do it,� Burt admitted, “But I think you need a calculator.�

L _____________________

D ____________________

F ____________________

A ____________________

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W ____________________

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3.

P _____________________

Who should be the leader on the ladder? ________________________

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What other teams scored the same amount of points? __________________________

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________________________________________________________________________

Are they in the right position? _________________

4.

In soccer they use ‘goal difference’ to separate teams, i.e. the difference between the against. This could be a positive or a negative goals scored for and the goals scored against number.

Would this settle the positive situation? __________________

5.

Calculate the percentages of all teams and their goal differences.

Order the teams accordingly.

Madness

What is the best team that you know of? Draw them.

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Worksheet 37 Munch the Martian has learned Earth sums but not the numerals.

For his lunch order he said he wanted this amount of chocolate pizzas.

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Samantha Smarty Pants solved the problem putting in the numbers between 1 - 9 and trying things out. When she found the answer she found out why Munch is called Munch.

Š ReadyEdPubl i cat i ons Questions •f orr evi ew pur posesonl y• 1.

What does Munch want for lunch? ___________________________________________ _____________________________________

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How many chocolate pizzas would Munch get? __________________

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3.

4.

If each pizza cost $1.50 how much would it cost Munch? __________________ Solve this:

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Could there be more than one answer? __________________

Madness

Write out a lunch order for excess amounts of your favourite food.

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Worksheet 38

Slamming Sammy Slick decided to buy a new car. It was a Radical Cool Racing Rod that could go from zero to 100 kph in 5 seconds.

The car cost $12 300 cash or on the ‘No Worries Pay It Off’ plan Sammy could put down $1230 deposit and pay the rest off in 36 payments of $336.

Slamming Sammy tried to drive a hard bargain but had to put on his brakes and pay by the ‘No Worries’ plan.

Š ReadyEdPubl i cat i ons Questions f o rr v i e wp ur po ses onl y• 1. What• is the name ofe the car bought

by Slamming Sammy? ______________________ “Well I won’t pay that much more I guess,� he said as he raced home.

________________________________________________________________________ If the Radical Cool Racing Rod goes only half as fast in the second five seconds as it

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does in the first, how fast will it be travelling after 10 seconds? __________________

3.

4.

How much of the price of the car did Sammy pay as a deposit? _________________

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How much is Sammy going to pay for the car on the ‘No Worries’ plan? __________________

5.

6.

How much more is the ‘No Worries’ payment than cash? __________________ If Sammy could have paid 50% off the price as a deposit and kept the same payments for 19 months, how much would he have paid? __________________

7.

8.

How much more than cash is this? _________________ How much quicker would he have finished paying it off? __________________

Madness

Design your own racing rod. How fast can it go in 5 seconds?

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Worksheet 39 Rotten Ralph has a recipe for Blackeye Punch that uses 1.6 litres of tinned Blackeyes (blackberries actually). The Blackeyes come in 600 millilitre tins and cost 85 cents each can. The punch also uses 1.6 litres of eyeballs (cherries) which come in 95 ml tins. Each tin costs $1.25 each. Other stuff in the punch includes 5 eyepatches at $1 each and a lemon sliced into thin slices. A lemon costs 25 cents.

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“This punch really has a kick,� said Rotten Ralph.

Š ReadyEdPubl i cat i ons Questions •f orr evi ew pur posesonl y• 1. What are the ingredients in Blackeye Punch? __________________________________

________________________________________________________________________

How much will this cost? _________________

3.

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How many tins of cherries does Ralph need? _________________

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How much will this cost him? __________________

4.

5.

6.

7.

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How many tins of blackberries does Ralph need? _________________

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2.

How much will the eyepatches and lemon cost? _______________________________ How much will the punch cost? __________________ How much punch is there? __________________

If Ralph went to the shop and found another brand of blackberries that was 400 ml for 75 cents which one would work out cheaper? ________________________________________________________________________

Madness

Make up your own punch recipe.

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Worksheet 40

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At Grunge’s party he started to run out of plates so everyone had to share.

Grunge only had 65 plates so every two guests shared a plate of cooked spiders, every three guests shared a plate of snake spaghetti and every four guests shared a plate of slime jelly. “Gee, how many people are here?� Slime asked.

“Does that count the six that have passed out and the twelve that have left ill?�

String wanted to know.

dyEdPubl i cat i ons QuestionsŠ Rea 1.

2.

•f orr evi ew pur posesonl y•

How many plates did Grunge have? ________________

If every plate had cooked spiders on it, how many people would be there? __________________

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If every plate had snake spaghetti on it, how many people would be there?

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3.

__________________

4.

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If every plate had slime jelly on it, how many people would be at the party?

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__________________

5.

6.

7.

8.

9.

How many people were there altogether? ___________________ How many plates had spiders? __________________ How many plates had snake? __________________

How many plates had slime jelly? __________________ How long did it take to figure this out? _________________

Madness

What would you serve at a party? What would you do at a party?

Write an invitation to a party.

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Answers

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Activity 1 P age 4 Page 1. Betty finishing early; 2. 55; 3. 155; 4. 255; 5. 355; 6. 455; 7. 555; 8. 655; 9. 755; 10. 855; 11. 955 Activity 2 P age 5 Page 1. wood; 2. $1; 3. 5x10c; 4. 53c, 53%; 5. $1,53, 153% Activity 3 P age 6 Page 1. Ballet lessons; 2. 1 hour; 3. 30 mins; 4. 15 mins; 5. 45 mins; 6. 1 hour 30 mins; 7. 4:15, 4:45 Activity 4 P age 7 Page 1. 6; 2. 4; 3. 25 - 125 or 100; 4. 78.5; 5. 430 (school week); 6. $645; 7. $2580; 8. Teacher to check.

Activity 5 P age 8 Page 1. A rotten banana, a slime and salad sandwich, a can of Belch a Burp. $3; 2. $1.05; 3. 45c; 4. $1.50; 5. 50% Activity 6 P age 9 Page 1. Depends on what you’ll believe; 2. 40 years old; 3. 37; 4. 85 (Shug-8, Dad-40, Mum-37); 5. Teacher to check; 6. 30 Activity 7 P age 10 Page 1. snails; 2. 60 snails; 3. $1, 25%; 4. 120; 5. $360, $120 more than day 1; 6. 820 left, $1640 Activity 8 P age 11 Page 1. 16; 2. 16; 3. 8, 50%; 4. 4 rounds; 5. 4th or 3rd; 6. $1000; 7. Teacher to check.

Activity 9 P age 12 Page 1. 200m; 2. 40m, 30m; 3. 10m; 4. 16 hours, 30 min; 5. Teacher to check.

Activity 10 P age 13 Page 1. $5000, rectangular; 2. $500 per m²; 3. 40 tiles; 4. $10 000; 5. Teacher to check; 6. $20 000, 160 Activity 11 P age 14 Page 1. $250 000; 2. $20 000 p/h; 3. 25%; 4. Teacher to check. age 15 Activity 12 P Page Answers will vary.

Activity 13 P age 16 Page 1. Cricket; 2. Mad, Mad Music, 6 hrs 55 min, 415 min; 3. How Itchy My Armpits, 1 hr 15 min; 4. Cricket, Stragglers Street, Grubby School; 5. 17 min; 6. 22 hrs 20 min; 7. News & Weather; 8. Cricket, Six Freds & Mad Music, Afternoon Movies Activity 14 P age 17 Page 1. Tennis, because she liked smashing things around; 2. Every 4th night after school, Every 5th night; 3. Next Friday, next Sunday, 5 lessons away; 4. In 16 days (Wednesday 2 weeks on); 5. 11 lessons; 6. 2; 7. $67.20 Activity 15 P age 18 Page 1. 6; 2. $64; 3. & 4. Teacher to check; 5. $391 Activity 16 P age 19 Page 1. 27; 2. 9; 3. 0; 4. 12; 5. 4; 6. 162; 7. 45; 8. 1x1x27 Activity 17 P age 20 Page 1. $7.50, $5.00; 2. $25; 3. $27.50; 4. 9c; 5. 11 or 12; 6. 278; 7. 167 Activity 18 P age 21 Page 1. 440; 2. 110; 3. 330; 4. 198; 5. 308; 6. 132; 7. 30%; 8. $2860 Activity 19 P age 22 Page 1. worms; 2. 4; 3. 1 worm; 4. 36 worms; 5. 9; 6. $1, 50c, 25c, 5c; 7. $1.30 Activity 20 P age 23 Page 1. $65; 2. $39; 3. $26; 4. $13; 5. $7.50; 6. 1225; 7. 52 Activity 21 P age 24 Page 1. 11; 2. red, yellow, blue, green, pink, orange; 3. 6x6 colours or 36 combinations (Complete total if he uses the same colours both sides and counts colours on other sides

of head, e.g. red/green, green/red.) 15 combinations if sides counted once. 4. $16.50; 5. 288; 6. 6 Activity 22 P age 25 Page 1. Puts patterns on pies & pasties; 2. $18, $720; 3. $108; 4. $841.50; 5. 320; 6. 45c per pie Activity 23 P age 26 Page 1. Z=38%; 2. B=30%; 3. D=20%; 4. S=2%; 5. 10%; 6. Z flies greatest, S flies least; 7. 48% left, 52%; 8. 52% Activity 24 P age 27 Page 1. Primary school tests; 2. 102% - you can’t score over 100% in a test; 3. Mucking around; 4. 76.14%; 5. 84.5%; 6. Primary school; 7. 8.36%; 8. 88.3% Activity 25 P age 28 Page 1. Ice-cream; 2. 36, 180; 3. 1 hr 30 mins per shift or 15 mins each; 4. $2 700 Activity 26 P age 29 Page 1. A rat; 2. 12 wheels, $60; 3. 9 trips (remember 1 chick can still drive); 4. $225; 5. He’ll have to cross the road.

Activity 27 P age 30 Page 1. Lost John Saliva, his galah & his robot, microfiche and silicone chips; 2. The asteroid has run out of water; 3. It needs water to make steam; 4. 7 trips Activity 28 P age 31 Page 1. X; 2. 100 (00-99); 3. 2850; 4. 28 500 Activity 29 P age 32 Page 1. G,2; 2. C,-1; 3. F,-3; 4. B,4; 5. & 6. Teacher to check; 7. Zx99, 77, 22% Activity 30 P age 33 Page 1. 10c, $2 & $5; 2. 25; 3. 200; 4. $10, $200; $500; 5. 1000, 50, 20; 6. 60x10c, 4x$5, 37x$2 Activity 31 P age 34 Page 1. 4 types; 2. $720; 3. $975; 4. $1728; 5. $765; 6. $4 per doll; 7. $2900; 8. $1288 Activity 32 P age 35 Page 1. 21; 2. 9 10 11 12 3. 3 1 1 2 6 6 5 7 6 3 5 2 1 2 4 3 2 5 3 6 1 4 4 3 5

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Activity 33 P age 36 Page 1. For the school’s new airport; 2. $155; 3. $111; 4. $104.55; 5. & 6. Tanya; 7. $104.55 to $155 or 50.45; 8. $629.45; 9. 76c Activity 34 P age 37 Page 1. 261cm; 2. $19 836, $164; 3. 43.5cm per day; 4. Teacher to check.

Activity 35 P age 38 Page 1. Exploding popcorn; 2. 100 degrees; 3. 8 times; 4. yes; 5. Teacher to check; 6. 130 degrees Activity 36 P age 39 Page 1. played, won, lost, drawn, for, against; 2. Smashers; 3. Punchers & Gougers, no; 4. 80, 73, 61, 32, 22, -5, -9, -131, yes; 5. Teacher to check.

Activity 37 P age 40 Page 1. Chocolate pizza; 2. 9801; 3. $14 701.50; 4. 53 +24

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77 Activity 38 P age 41 Page 1. Radical Cool Racing Rod; 2. 150kph; 3. $1230 or 10%; 4. $12 096 + deposit; 5. $1026; 6. $12 534, $234, 1 yr 5 months Activity 39 P age 42 Page 1. Blackberries, cherries, eyepatches & a lemon; 2. 3 tins, $2.55; 3. 17, $21.25; 4. $5 + 25 cents; 5. $29.05; 6. 3.2 litres; 7. 600ml is cheaper Activity 40 P age 43 Page 1. 65; 2. 130; 3. 195; 4. 260; 5. 60 people; 6. 30 plates; 7. 20 plates; 8. 15 plates; 9. For ever!

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