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9th Grade Percentage Increase and Decrease Worksheet — Level 3 — Answers

Answer sheet with worked solutions for the 9th Grade percentages worksheet.

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Success TutoringWorksheetsAnswer sheet9th Grade · Mathematics · Percentages

9th Grade Percentage Increase and Decrease Worksheet — Level 3 — Answers

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

1.A price changes from $700 to $1225. Find the percentage increase.

Answer: 75%

  1. Change = 1225 − 700 = 525
  2. 525 ÷ 700 × 100 = 75%
2.After a 5% decrease, a price is $285. What was the original price?

Answer: $300

  1. New price = 95% of the original
  2. Original = 285 ÷ 0.95
  3. = $300
3.After a 60% decrease, a price is $104. What was the original price?

Answer: $260

  1. New price = 40% of the original
  2. Original = 104 ÷ 0.4
  3. = $260
4.A price changes from $200 to $320. Find the percentage increase.

Answer: 60%

  1. Change = 320 − 200 = 120
  2. 120 ÷ 200 × 100 = 60%
5.A price changes from $720 to $504. Find the percentage decrease.

Answer: 30%

  1. Change = 720 − 504 = 216
  2. 216 ÷ 720 × 100 = 30%
6.A price changes from $660 to $1056. Find the percentage increase.

Answer: 60%

  1. Change = 1056 − 660 = 396
  2. 396 ÷ 660 × 100 = 60%
7.A price changes from $540 to $702. Find the percentage increase.

Answer: 30%

  1. Change = 702 − 540 = 162
  2. 162 ÷ 540 × 100 = 30%
8.A price changes from $580 to $464. Find the percentage decrease.

Answer: 20%

  1. Change = 580 − 464 = 116
  2. 116 ÷ 580 × 100 = 20%
9.After a 20% increase, a price is $768. What was the original price?

Answer: $640

  1. New price = 120% of the original
  2. Original = 768 ÷ 1.2
  3. = $640
10.After a 40% decrease, a price is $96. What was the original price?

Answer: $160

  1. New price = 60% of the original
  2. Original = 96 ÷ 0.6
  3. = $160
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