Addition and subtraction

critical thinking logic puzzles addition and subtraction

A vote for president: Noah, Courtney, Eric, and Makayla each voted for one person to be president. How many votes did each person receive and who will be the president?

1. Noah has one more vote than Courtney.

2. Eric has one more vote than Noah.

3. If Makayla had one more vote, Makayla would have the same number of votes as Eric.

4. Courtney has one less vote than Makayla.

5. Noah has the same number of votes as Makayla.

Number of pens: Savannah, Sydney, Brianna, Samantha, Amber, Andrew, and Brian each have a certain number of pens. One has nine pens, one has eighteen pens, one has nineteen pens, one has eleven pens, one has fifteen pens, one has four pens, and one has six pens.

Figure out how many pens each person has.

1.

If Andrew gave Savannah nine pens, Savannah would have twenty-eight pens and Andrew would have nine pens.

2.

Brian is not the one with fifteen pens.

3.

Amber is not the one with four pens.

4.

Samantha has seven fewer pens than Brianna.

5.

Samantha is not the one with six pens.

6.

Brianna has five more pens than Sydney.

7.

Sydney has two more pens than Samantha.

8.

Sydney and Brianna have seventeen pens altogether.

9.

Sydney is not the one with eleven pens.

10.

Amber has six more pens than Brian.

11.

Amber is not the one with six pens.

12.

Sydney is not the one with nine pens.

13.

Brian is not the one with six pens.

14.

Samantha and Brian have thirteen pens altogether.

15.

Sydney is not the one with fifteen pens.

16.

Brianna and Sydney have seventeen pens altogether.

17.

Amber and Sydney have twenty-one pens altogether.

18.

Brian has two fewer pens than Brianna.

19.

Brian is not the one with four pens.

Stickers:

Jacob, Natalie, Kylie, Caleb, and Anthony each started a sticker collection in February. Each one of them collected a different number of stickers in February and March. During the 1st month, they collected 26, 32, 20, 24, and 19 stickers. During the 2nd month, they collected 50, 44, 38, 41, and 53 stickers.

Figure out how many stickers each person collected in February and March.

1. Jacob and Caleb both were not the ones who collected nineteen stickers in February.

2. Anthony and Kylie both were not the ones who collected forty-one stickers in March.

3. If Natalie did not collect stickers in February then Natalie would only have 41 stickers.

4. Anthony has a total of eighty-five stickers.

5. If Jacob did not collect stickers in February then Jacob would only have 50 stickers.

6. Kylie has a total of seventy stickers.

7. Caleb collected fourteen more stickers in March than in February.

Answers: ℘ A vote for president: _

+

Courtney, Noah = Makayla, Eric

℘Number of pens 4 Savannah x Sydney x Brianna x Samantha V Amber x Andrew x Brian x

6 x V x x x x x

9 x x x x x x V

11 15 18 19 x x x V x x x x V x x x x x x x x V x x x x V x x x x x

℘ Stickers 19 Jacob

x

Natalie Kylie

V x

Caleb Anthony

February 20 24 26 32

March 38 41 44 50 53

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