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Year 7 Percentage Increase and Decrease Worksheet — Level 3 — Practice Set 3 — Answers

Answer sheet with worked solutions for the Year 7 percentages worksheet.

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Success TutoringWorksheetsAnswer sheetYear 7 · Mathematics · Percentages

Year 7 Percentage Increase and Decrease Worksheet — Level 3 — Practice Set 3 — Answers

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

1.A price changes from $80 to $72. Find the percentage decrease.

Answer: 10%

  1. Change = 80 − 72 = 8
  2. 8 ÷ 80 × 100 = 10%
2.A price changes from $60 to $15. Find the percentage decrease.

Answer: 75%

  1. Change = 60 − 15 = 45
  2. 45 ÷ 60 × 100 = 75%
3.After a 60% decrease, a price is $128. What was the original price?

Answer: $320

  1. New price = 40% of the original
  2. Original = 128 ÷ 0.4
  3. = $320
4.A price changes from $740 to $1184. Find the percentage increase.

Answer: 60%

  1. Change = 1184 − 740 = 444
  2. 444 ÷ 740 × 100 = 60%
5.A price changes from $640 to $160. Find the percentage decrease.

Answer: 75%

  1. Change = 640 − 160 = 480
  2. 480 ÷ 640 × 100 = 75%
6.After a 25% increase, a price is $575. What was the original price?

Answer: $460

  1. New price = 125% of the original
  2. Original = 575 ÷ 1.25
  3. = $460
7.A price changes from $740 to $888. Find the percentage increase.

Answer: 20%

  1. Change = 888 − 740 = 148
  2. 148 ÷ 740 × 100 = 20%
8.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
9.A price changes from $340 to $408. Find the percentage increase.

Answer: 20%

  1. Change = 408 − 340 = 68
  2. 68 ÷ 340 × 100 = 20%
10.A price changes from $120 to $144. Find the percentage increase.

Answer: 20%

  1. Change = 144 − 120 = 24
  2. 24 ÷ 120 × 100 = 20%
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