Year 10 Percentage Increase and Decrease Worksheet — Level 1 — Practice Set 2 — Answers
Answer sheet with worked solutions for the Year 10 percentages worksheet.
Success TutoringWorksheetsAnswer sheetYear 10 · Mathematics · PercentagesYear 10 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 $360 to $324. Find the percentage decrease.
Answer: 10%
- Change = 360 − 324 = 36
- 36 ÷ 360 × 100 = 10%
2.A price changes from $310 to $465. Find the percentage increase.
Answer: 50%
- Change = 465 − 310 = 155
- 155 ÷ 310 × 100 = 50%
3.A price changes from $100 to $50. Find the percentage decrease.
Answer: 50%
- Change = 100 − 50 = 50
- 50 ÷ 100 × 100 = 50%
4.A price changes from $100 to $125. Find the percentage increase.
Answer: 25%
- Change = 125 − 100 = 25
- 25 ÷ 100 × 100 = 25%
5.A price changes from $210 to $168. Find the percentage decrease.
Answer: 20%
- Change = 210 − 168 = 42
- 42 ÷ 210 × 100 = 20%
6.A price changes from $390 to $312. Find the percentage decrease.
Answer: 20%
- Change = 390 − 312 = 78
- 78 ÷ 390 × 100 = 20%
7.A price changes from $240 to $180. Find the percentage decrease.
Answer: 25%
- Change = 240 − 180 = 60
- 60 ÷ 240 × 100 = 25%
8.A price changes from $180 to $144. Find the percentage decrease.
Answer: 20%
- Change = 180 − 144 = 36
- 36 ÷ 180 × 100 = 20%
9.A price changes from $140 to $175. Find the percentage increase.
Answer: 25%
- Change = 175 − 140 = 35
- 35 ÷ 140 × 100 = 25%
10.A price changes from $220 to $165. Find the percentage decrease.
Answer: 25%
- Change = 220 − 165 = 55
- 55 ÷ 220 × 100 = 25%
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