GRADE 7 MATHEMATICS (7.2) Number, operation, and quantitative reasoning. The student adds, subtracts, multiplies, or divides to solve problems and justify solutions. The student is expected to: (F) select and use appropriate operations to solve problems and justify the selections.
Celeste bought 5 identical t-shirts and 4 pairs of socks for a total cost of $44.86, including tax. Each pair of socks cost $1.19, including tax. Write an expression that could be used to find the cost of each t-shirt, s, including tax.
Determine the cost of each t-shirt.
1. What mathematical concepts and vocabulary do I need to know to be able to work this problem?
2. Will the Grade 7 Mathematics Formula Chart be helpful on this problem? Why or why not?
3. Will a picture or diagram be helpful on this problem? If so, how?
4. What problem-solving strategy or strategies will I use to help solve this problem?
5. Extension (7.2C): Draw a number line model for -4 + 2 +5 .
TEKSING TOWARD TAKS © 2006
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GRADE 7 MATHEMATICS (7.2) Number, operation, and quantitative reasoning. The student adds, subtracts, multiplies, or divides to solve problems and justify solutions. The student is expected to: (F) select and use appropriate operations to solve problems and justify the selections.
Celeste bought 5 identical t-shirts and 4 pairs of socks for a total cost of $44.86, including tax. Each pair of socks cost $1.19, including tax. Write an expression that could be used to find the
cost of each t-shirt, s, including tax.
Determine the cost of each t-shirt.
TEKSING TOWARD TAKS © 2006
Page 2
GRADE 7 MATHEMATICS (7.2) Number, operation, and quantitative reasoning. The student adds, subtracts, multiplies, or divides to solve problems and justify solutions. The student is expected to: (F) select and use appropriate operations to solve problems and justify the selections.
Mrs. Barry bought 1 dozen packages of spaghetti sauce mix priced at 3 packages for $1.29 and 4 packages of spaghetti priced at 2 for $2.79. What is the total amount she spent, not including tax, on the spaghetti and sauce?
Mary’s math test had 3 sections. The first section was a true-false section with each correct answer worth 2 points. Mary answered 12 of those correctly. The second section was a multiple-choice section with each correct answer worth 3 points. Mary answered 9 of those correctly. The third section was a calculation section with each correct answer worth 12 points. Mary got 3 of these correct. What was Mary’s score on the test?
A
$10.74
B
$9.45
C
$4.08
A
75
D
$15.03
B
87
C
91
D
93
Jimmy is buying ground beef that is priced at 3 pounds for $4. He wants to buy 5 pounds. Which of the following represents the cost of 5 pounds?
A
$4 3 5
B
$4 3 5
Sue Ellen bought new towels for her bathroom. They were on sale for 40% off. If the regular price of a towel was $15, how much did Sue Ellen save if she bought 3 towels on sale?
C
$4 3 5 $3 4 5
A
$18
D
B
$9
C
$27
D
$6
Lorenzo is buying 3 dozen bottles of flavored drinks that are priced at 3 for $0.79 and 8 packages of hamburger buns that are priced at 2 for $0.89. What is the total amount he spent, not including tax, on the drinks and buns? A
$9.49
B
$12.04
C
$13.04
D
$35.56
TEKSING TOWARD TAKS © 2006
Mr. Edison works at the electronic store in the mall. He earns 5% commission on all sales over $20,000 in the month. Last month he had sales of $24,000. What was his commission? A
$2000
B
$1500
C
$1200
D
$200
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