Year 10 Percentage Increase and Decrease Worksheet — Level 1 — Practice Set 4 — 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 4 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $280 to $308. Find the percentage increase.
Answer: 10%
- Change = 308 − 280 = 28
- 28 ÷ 280 × 100 = 10%
2.A price changes from $350 to $385. Find the percentage increase.
Answer: 10%
- Change = 385 − 350 = 35
- 35 ÷ 350 × 100 = 10%
3.A price changes from $280 to $140. Find the percentage decrease.
Answer: 50%
- Change = 280 − 140 = 140
- 140 ÷ 280 × 100 = 50%
4.A price changes from $310 to $372. Find the percentage increase.
Answer: 20%
- Change = 372 − 310 = 62
- 62 ÷ 310 × 100 = 20%
5.A price changes from $60 to $48. Find the percentage decrease.
Answer: 20%
- Change = 60 − 48 = 12
- 12 ÷ 60 × 100 = 20%
6.A price changes from $180 to $225. Find the percentage increase.
Answer: 25%
- Change = 225 − 180 = 45
- 45 ÷ 180 × 100 = 25%
7.A price changes from $350 to $525. Find the percentage increase.
Answer: 50%
- Change = 525 − 350 = 175
- 175 ÷ 350 × 100 = 50%
8.A price changes from $80 to $60. Find the percentage decrease.
Answer: 25%
- Change = 80 − 60 = 20
- 20 ÷ 80 × 100 = 25%
9.A price changes from $300 to $270. Find the percentage decrease.
Answer: 10%
- Change = 300 − 270 = 30
- 30 ÷ 300 × 100 = 10%
10.A price changes from $390 to $351. Find the percentage decrease.
Answer: 10%
- Change = 390 − 351 = 39
- 39 ÷ 390 × 100 = 10%
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