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 $100 to $150. Find the percentage increase.
Answer: 50%
- Change = 150 − 100 = 50
- 50 ÷ 100 × 100 = 50%
2.A price changes from $310 to $341. Find the percentage increase.
Answer: 10%
- Change = 341 − 310 = 31
- 31 ÷ 310 × 100 = 10%
3.A price changes from $360 to $396. Find the percentage increase.
Answer: 10%
- Change = 396 − 360 = 36
- 36 ÷ 360 × 100 = 10%
4.A price changes from $370 to $296. Find the percentage decrease.
Answer: 20%
- Change = 370 − 296 = 74
- 74 ÷ 370 × 100 = 20%
5.A price changes from $110 to $165. Find the percentage increase.
Answer: 50%
- Change = 165 − 110 = 55
- 55 ÷ 110 × 100 = 50%
6.A price changes from $240 to $264. Find the percentage increase.
Answer: 10%
- Change = 264 − 240 = 24
- 24 ÷ 240 × 100 = 10%
7.A price changes from $180 to $225. Find the percentage increase.
Answer: 25%
- Change = 225 − 180 = 45
- 45 ÷ 180 × 100 = 25%
8.A price changes from $80 to $96. Find the percentage increase.
Answer: 20%
- Change = 96 − 80 = 16
- 16 ÷ 80 × 100 = 20%
9.A price changes from $80 to $64. Find the percentage decrease.
Answer: 20%
- Change = 80 − 64 = 16
- 16 ÷ 80 × 100 = 20%
10.A price changes from $400 to $300. Find the percentage decrease.
Answer: 25%
- Change = 400 − 300 = 100
- 100 ÷ 400 × 100 = 25%
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