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7th Grade Percentage Increase and Decrease Worksheet — Level 3 — Practice Set 4 — Answers

Answer sheet with worked solutions for the 7th Grade percentages worksheet.

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Success TutoringWorksheetsAnswer sheet7th Grade · Mathematics · Percentages

7th Grade Percentage Increase and Decrease Worksheet — Level 3 — Practice Set 4 — Answers

Percentage change = change ÷ original amount × 100. Always divide by the original amount.

1.A price changes from $40 to $16. Find the percentage decrease.

Answer: 60%

  1. Change = 40 − 16 = 24
  2. 24 ÷ 40 × 100 = 60%
2.After a 40% decrease, a price is $348. What was the original price?

Answer: $580

  1. New price = 60% of the original
  2. Original = 348 ÷ 0.6
  3. = $580
3.A price changes from $540 to $432. Find the percentage decrease.

Answer: 20%

  1. Change = 540 − 432 = 108
  2. 108 ÷ 540 × 100 = 20%
4.After a 25% increase, a price is $325. What was the original price?

Answer: $260

  1. New price = 125% of the original
  2. Original = 325 ÷ 1.25
  3. = $260
5.A price changes from $780 to $195. Find the percentage decrease.

Answer: 75%

  1. Change = 780 − 195 = 585
  2. 585 ÷ 780 × 100 = 75%
6.A price changes from $520 to $416. Find the percentage decrease.

Answer: 20%

  1. Change = 520 − 416 = 104
  2. 104 ÷ 520 × 100 = 20%
7.After a 30% decrease, a price is $434. What was the original price?

Answer: $620

  1. New price = 70% of the original
  2. Original = 434 ÷ 0.7
  3. = $620
8.After a 60% increase, a price is $320. What was the original price?

Answer: $200

  1. New price = 160% of the original
  2. Original = 320 ÷ 1.6
  3. = $200
9.A price changes from $800 to $896. Find the percentage increase.

Answer: 12%

  1. Change = 896 − 800 = 96
  2. 96 ÷ 800 × 100 = 12%
10.After a 25% increase, a price is $250. What was the original price?

Answer: $200

  1. New price = 125% of the original
  2. Original = 250 ÷ 1.25
  3. = $200
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