Percent Change Unit Review Quiz

Authored by Jeffrey Lauritz

Mathematics

7th Grade

CCSS covered

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18 questions

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MATH RESPONSE QUESTION

2 mins • 1 pt

Marcus wants to buy a TV that costs $2,400. The sales tax is 8.5%. How much tax will Marcus need to pay?

$204$

Mathematical Equivalence

Answer explanation

What is 8.5% of 2400?

$0.085\times2400$

Tags

CCSS.6.RP.A.3C

MATH RESPONSE QUESTION

2 mins • 1 pt

A bag of regular potato chips has 1,230 calories. A bag of pretzels has 30% fewer calories. How many calories are in a bag of pretzels?

$861$

Mathematical Equivalence

Answer explanation

What is 70% of 1230?
$0.7\times1230$

Tags

CCSS.6.RP.A.3C

MATH RESPONSE QUESTION

2 mins • 1 pt

A store has a markup rate of 30%. The store sells a video game for $52. How much did the store buy the video game for?

$40$

Mathematical Equivalence

Answer explanation

52 is 130% of what number?
$52=1.3\times what$ $52\div1.3$

Tags

CCSS.6.RP.A.3C

MATH RESPONSE QUESTION

2 mins • 1 pt

A bike that originally was sold for $500 is on sale for $380. What is the percentage of the discount?

$24$

Mathematical Equivalence

OFF

Answer explanation

$500-380=120$
120 is what percent of 500?
$120=what\ \times500$ $120\div500=0.24$
$0.24\rightarrow24\%$

Tags

CCSS.6.RP.A.3C

DRAG AND DROP QUESTION

1 min • 1 pt

Pizza dough is supposed to weigh 280 grams. Any weight within a 3% error is acceptable.
Pizza dough can weigh between a minimum of (a) and a maximum of (b) .

271.6 grams

288.4 grams

277 grams

283 grams

196 grams

364 grams

Answer explanation

What is 97% of 280?
$0.97\times280$
What is 103% of 280?
$1.03\times280$

Tags

CCSS.6.RP.A.3C

MULTIPLE SELECT QUESTION

45 sec • 1 pt

The size of a regular candy bar is x ounces. The jumbo candy bar is 60% bigger. Which expressions could be used to find the size of the jumbo candy bar?

$0.6x$

$1.6x$

$x+1.6x$

$0.4x$

Answer explanation

$0.6x$ is 60% of x or 40% less than x.
$1.6x$ is 160% of x or 60% more than x.
$x+0.6x$ is x plus an additional 60% of x.
$0.4x$ is 40% of x or 60% less than x.

Tags

CCSS.HSA-SSE.A.1A

FILL IN THE BLANKS QUESTION

2 mins • 1 pt

If the original cost of a basketball was $25 and the new cost including tax is $27.25 , what is the sales tax rate?

(a)

Tags

CCSS.6.RP.A.3C

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Percent Change Unit Review

Marcus wants to buy a TV that costs $2,400. The sales tax is 8.5%. How much tax will Marcus need to pay?

What is 8.5% of 2400?

$0.085\times2400$

A bag of regular potato chips has 1,230 calories. A bag of pretzels has 30% fewer calories. How many calories are in a bag of pretzels?

What is 70% of 1230?
$0.7\times1230$

A store has a markup rate of 30%. The store sells a video game for $52. How much did the store buy the video game for?

52 is 130% of what number?
$52=1.3\times what$ $52\div1.3$

A bike that originally was sold for $500 is on sale for $380. What is the percentage of the discount?

$500-380=120$
120 is what percent of 500?
$120=what\ \times500$ $120\div500=0.24$
$0.24\rightarrow24\%$

Pizza dough is supposed to weigh 280 grams. Any weight within a 3% error is acceptable.
Pizza dough can weigh between a minimum of (a) and a maximum of (b) .

What is 97% of 280?
$0.97\times280$
What is 103% of 280?
$1.03\times280$

The size of a regular candy bar is x ounces. The jumbo candy bar is 60% bigger. Which expressions could be used to find the size of the jumbo candy bar?

$0.6x$ is 60% of x or 40% less than x.
$1.6x$ is 160% of x or 60% more than x.
$x+0.6x$ is x plus an additional 60% of x.
$0.4x$ is 40% of x or 60% less than x.

If the original cost of a basketball was $25 and the new cost including tax is $27.25 , what is the sales tax rate?

(a)

How much tax would you pay on a new TV that is $899 at Best Buy, if the tax rate is 6.5%?

Represent the situation with an equation:

The sale price of a tennis racquet is $21. This is 30% off the original price. What is the original price of the tennis racquet?

Represent the situation with an equation:

A store pays $50 for a pair of shoes, then marks them up 25%. What is the selling price of the shoes?

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Percent Change Unit Review

Marcus wants to buy a TV that costs $2,400. The sales tax is 8.5%. How much tax will Marcus need to pay?

What is 8.5% of 2400? 0.085×24000.085\times24000.085×2400

A bag of regular potato chips has 1,230 calories. A bag of pretzels has 30% fewer calories. How many calories are in a bag of pretzels?

What is 70% of 1230? 0.7×12300.7\times12300.7×1230

A store has a markup rate of 30%. The store sells a video game for $52. How much did the store buy the video game for?

52 is 130% of what number? 52=1.3×what52=1.3\times what52=1.3×what 52÷1.352\div1.352÷1.3

A bike that originally was sold for $500 is on sale for $380. What is the percentage of the discount?

500−380=120500-380=120500−380=120 120 is what percent of 500? 120=what ×500120=what\ \times500120=what ×500 120÷500=0.24120\div500=0.24120÷500=0.24 0.24→24%0.24\rightarrow24\%0.24→24%

Pizza dough is supposed to weigh 280 grams. Any weight within a 3% error is acceptable. Pizza dough can weigh between ​​a minimum of (a) and a maximum of​ (b) .

What is 97% of 280? 0.97×2800.97\times2800.97×280 What is 103% of 280? 1.03×2801.03\times2801.03×280

The size of a regular candy bar is x ounces. The jumbo candy bar is 60% bigger. Which expressions could be used to find the size of the jumbo candy bar?

0.6x0.6x0.6x is 60% of x or 40% less than x. 1.6x1.6x1.6x is 160% of x or 60% more than x. x+0.6xx+0.6xx+0.6x is x plus an additional 60% of x. 0.4x0.4x0.4x is 40% of x or 60% less than x.

If the original cost of a basketball was $25 and the new cost including tax is $27.25 , what is the sales tax rate? (a)

How much tax would you pay on a new TV that is $899 at Best Buy, if the tax rate is 6.5%?

Represent the situation with an equation:The sale price of a tennis racquet is $21. This is 30% off the original price. What is the original price of the tennis racquet?

Represent the situation with an equation:A store pays $50 for a pair of shoes, then marks them up 25%. What is the selling price of the shoes?

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Mathematics

What is 8.5% of 2400?

$0.085\times2400$

What is 70% of 1230?
$0.7\times1230$

52 is 130% of what number?
$52=1.3\times what$ $52\div1.3$

$500-380=120$
120 is what percent of 500?
$120=what\ \times500$ $120\div500=0.24$
$0.24\rightarrow24\%$

Pizza dough is supposed to weigh 280 grams. Any weight within a 3% error is acceptable.
Pizza dough can weigh between a minimum of (a) and a maximum of (b) .

What is 97% of 280?
$0.97\times280$
What is 103% of 280?
$1.03\times280$

$0.6x$ is 60% of x or 40% less than x.
$1.6x$ is 160% of x or 60% more than x.
$x+0.6x$ is x plus an additional 60% of x.
$0.4x$ is 40% of x or 60% less than x.

If the original cost of a basketball was $25 and the new cost including tax is $27.25 , what is the sales tax rate?

(a)

Represent the situation with an equation:

The sale price of a tennis racquet is $21. This is 30% off the original price. What is the original price of the tennis racquet?

Represent the situation with an equation:

A store pays $50 for a pair of shoes, then marks them up 25%. What is the selling price of the shoes?