Year 9 Percentage Increase and Decrease Worksheet — Level 2 — Practice Set 4 — Answers
Answer sheet with worked solutions for the Year 9 percentages worksheet.
Success TutoringWorksheetsAnswer sheetYear 9 · Mathematics · PercentagesYear 9 Percentage Increase and Decrease Worksheet — Level 2 — Practice Set 4 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $100 to $140. Find the percentage increase.
Answer: 40%
- Change = 140 − 100 = 40
- 40 ÷ 100 × 100 = 40%
2.A price changes from $480 to $576. Find the percentage increase.
Answer: 20%
- Change = 576 − 480 = 96
- 96 ÷ 480 × 100 = 20%
3.A price changes from $560 to $392. Find the percentage decrease.
Answer: 30%
- Change = 560 − 392 = 168
- 168 ÷ 560 × 100 = 30%
4.A price changes from $620 to $589. Find the percentage decrease.
Answer: 5%
- Change = 620 − 589 = 31
- 31 ÷ 620 × 100 = 5%
5.A price changes from $280 to $336. Find the percentage increase.
Answer: 20%
- Change = 336 − 280 = 56
- 56 ÷ 280 × 100 = 20%
6.A price changes from $560 to $672. Find the percentage increase.
Answer: 20%
- Change = 672 − 560 = 112
- 112 ÷ 560 × 100 = 20%
7.A price changes from $260 to $156. Find the percentage decrease.
Answer: 40%
- Change = 260 − 156 = 104
- 104 ÷ 260 × 100 = 40%
8.A price changes from $520 to $468. Find the percentage decrease.
Answer: 10%
- Change = 520 − 468 = 52
- 52 ÷ 520 × 100 = 10%
9.A price changes from $280 to $168. Find the percentage decrease.
Answer: 40%
- Change = 280 − 168 = 112
- 112 ÷ 280 × 100 = 40%
10.A price changes from $660 to $561. Find the percentage decrease.
Answer: 15%
- Change = 660 − 561 = 99
- 99 ÷ 660 × 100 = 15%
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