10th Grade Percentage Increase and Decrease Worksheet — Level 1 — Practice Set 3 — Answers
Answer sheet with worked solutions for the 10th Grade percentages worksheet.
Success TutoringWorksheetsAnswer sheet10th Grade · Mathematics · Percentages10th Grade Percentage Increase and Decrease Worksheet — Level 1 — Practice Set 3 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $90 to $72. Find the percentage decrease.
Answer: 20%
- Change = 90 − 72 = 18
- 18 ÷ 90 × 100 = 20%
2.A price changes from $170 to $204. Find the percentage increase.
Answer: 20%
- Change = 204 − 170 = 34
- 34 ÷ 170 × 100 = 20%
3.A price changes from $110 to $99. Find the percentage decrease.
Answer: 10%
- Change = 110 − 99 = 11
- 11 ÷ 110 × 100 = 10%
4.A price changes from $110 to $55. Find the percentage decrease.
Answer: 50%
- Change = 110 − 55 = 55
- 55 ÷ 110 × 100 = 50%
5.A price changes from $340 to $170. Find the percentage decrease.
Answer: 50%
- Change = 340 − 170 = 170
- 170 ÷ 340 × 100 = 50%
6.A price changes from $250 to $225. Find the percentage decrease.
Answer: 10%
- Change = 250 − 225 = 25
- 25 ÷ 250 × 100 = 10%
7.A price changes from $120 to $60. Find the percentage decrease.
Answer: 50%
- Change = 120 − 60 = 60
- 60 ÷ 120 × 100 = 50%
8.A price changes from $190 to $285. Find the percentage increase.
Answer: 50%
- Change = 285 − 190 = 95
- 95 ÷ 190 × 100 = 50%
9.A price changes from $120 to $90. Find the percentage decrease.
Answer: 25%
- Change = 120 − 90 = 30
- 30 ÷ 120 × 100 = 25%
10.A price changes from $40 to $32. Find the percentage decrease.
Answer: 20%
- Change = 40 − 32 = 8
- 8 ÷ 40 × 100 = 20%
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