9th Grade Percentage Increase and Decrease Worksheet — Level 1 — Practice Set 2 — Answers
Answer sheet with worked solutions for the 9th Grade percentages worksheet.
Success TutoringWorksheetsAnswer sheet9th Grade · Mathematics · Percentages9th Grade Percentage Increase and Decrease Worksheet — Level 1 — Practice Set 2 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $150 to $180. Find the percentage increase.
Answer: 20%
- Change = 180 − 150 = 30
- 30 ÷ 150 × 100 = 20%
2.A price changes from $380 to $190. Find the percentage decrease.
Answer: 50%
- Change = 380 − 190 = 190
- 190 ÷ 380 × 100 = 50%
3.A price changes from $400 to $480. Find the percentage increase.
Answer: 20%
- Change = 480 − 400 = 80
- 80 ÷ 400 × 100 = 20%
4.A price changes from $340 to $374. Find the percentage increase.
Answer: 10%
- Change = 374 − 340 = 34
- 34 ÷ 340 × 100 = 10%
5.A price changes from $30 to $15. Find the percentage decrease.
Answer: 50%
- Change = 30 − 15 = 15
- 15 ÷ 30 × 100 = 50%
6.A price changes from $180 to $216. Find the percentage increase.
Answer: 20%
- Change = 216 − 180 = 36
- 36 ÷ 180 × 100 = 20%
7.A price changes from $370 to $444. Find the percentage increase.
Answer: 20%
- Change = 444 − 370 = 74
- 74 ÷ 370 × 100 = 20%
8.A price changes from $180 to $270. Find the percentage increase.
Answer: 50%
- Change = 270 − 180 = 90
- 90 ÷ 180 × 100 = 50%
9.A price changes from $290 to $261. Find the percentage decrease.
Answer: 10%
- Change = 290 − 261 = 29
- 29 ÷ 290 × 100 = 10%
10.A price changes from $280 to $140. Find the percentage decrease.
Answer: 50%
- Change = 280 − 140 = 140
- 140 ÷ 280 × 100 = 50%
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