Year 9 Percentage Increase and Decrease Worksheet — Level 2 — Practice Set 3 — 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 3 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $420 to $588. Find the percentage increase.
Answer: 40%
- Change = 588 − 420 = 168
- 168 ÷ 420 × 100 = 40%
2.A price changes from $740 to $1184. Find the percentage increase.
Answer: 60%
- Change = 1184 − 740 = 444
- 444 ÷ 740 × 100 = 60%
3.A price changes from $380 to $418. Find the percentage increase.
Answer: 10%
- Change = 418 − 380 = 38
- 38 ÷ 380 × 100 = 10%
4.A price changes from $540 to $567. Find the percentage increase.
Answer: 5%
- Change = 567 − 540 = 27
- 27 ÷ 540 × 100 = 5%
5.A price changes from $180 to $171. Find the percentage decrease.
Answer: 5%
- Change = 180 − 171 = 9
- 9 ÷ 180 × 100 = 5%
6.A price changes from $460 to $184. Find the percentage decrease.
Answer: 60%
- Change = 460 − 184 = 276
- 276 ÷ 460 × 100 = 60%
7.A price changes from $240 to $264. Find the percentage increase.
Answer: 10%
- Change = 264 − 240 = 24
- 24 ÷ 240 × 100 = 10%
8.A price changes from $100 to $40. Find the percentage decrease.
Answer: 60%
- Change = 100 − 40 = 60
- 60 ÷ 100 × 100 = 60%
9.A price changes from $360 to $216. Find the percentage decrease.
Answer: 40%
- Change = 360 − 216 = 144
- 144 ÷ 360 × 100 = 40%
10.A price changes from $280 to $336. Find the percentage increase.
Answer: 20%
- Change = 336 − 280 = 56
- 56 ÷ 280 × 100 = 20%
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