Year 10 Percentage Increase and Decrease Worksheet — Level 1 — Practice Set 3 — 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 3 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $370 to $185. Find the percentage decrease.
Answer: 50%
- Change = 370 − 185 = 185
- 185 ÷ 370 × 100 = 50%
2.A price changes from $250 to $275. Find the percentage increase.
Answer: 10%
- Change = 275 − 250 = 25
- 25 ÷ 250 × 100 = 10%
3.A price changes from $340 to $510. Find the percentage increase.
Answer: 50%
- Change = 510 − 340 = 170
- 170 ÷ 340 × 100 = 50%
4.A price changes from $280 to $420. Find the percentage increase.
Answer: 50%
- Change = 420 − 280 = 140
- 140 ÷ 280 × 100 = 50%
5.A price changes from $270 to $405. Find the percentage increase.
Answer: 50%
- Change = 405 − 270 = 135
- 135 ÷ 270 × 100 = 50%
6.A price changes from $310 to $465. Find the percentage increase.
Answer: 50%
- Change = 465 − 310 = 155
- 155 ÷ 310 × 100 = 50%
7.A price changes from $270 to $297. Find the percentage increase.
Answer: 10%
- Change = 297 − 270 = 27
- 27 ÷ 270 × 100 = 10%
8.A price changes from $80 to $88. Find the percentage increase.
Answer: 10%
- Change = 88 − 80 = 8
- 8 ÷ 80 × 100 = 10%
9.A price changes from $140 to $210. Find the percentage increase.
Answer: 50%
- Change = 210 − 140 = 70
- 70 ÷ 140 × 100 = 50%
10.A price changes from $40 to $60. Find the percentage increase.
Answer: 50%
- Change = 60 − 40 = 20
- 20 ÷ 40 × 100 = 50%
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