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 $240 to $336. Find the percentage increase.
Answer: 40%
- Change = 336 − 240 = 96
- 96 ÷ 240 × 100 = 40%
2.A price changes from $40 to $10. Find the percentage decrease.
Answer: 75%
- Change = 40 − 10 = 30
- 30 ÷ 40 × 100 = 75%
3.A price changes from $580 to $754. Find the percentage increase.
Answer: 30%
- Change = 754 − 580 = 174
- 174 ÷ 580 × 100 = 30%
4.A price changes from $600 to $150. Find the percentage decrease.
Answer: 75%
- Change = 600 − 150 = 450
- 450 ÷ 600 × 100 = 75%
5.A price changes from $360 to $270. Find the percentage decrease.
Answer: 25%
- Change = 360 − 270 = 90
- 90 ÷ 360 × 100 = 25%
6.A price changes from $300 to $225. Find the percentage decrease.
Answer: 25%
- Change = 300 − 225 = 75
- 75 ÷ 300 × 100 = 25%
7.A price changes from $280 to $266. Find the percentage decrease.
Answer: 5%
- Change = 280 − 266 = 14
- 14 ÷ 280 × 100 = 5%
8.A price changes from $280 to $308. Find the percentage increase.
Answer: 10%
- Change = 308 − 280 = 28
- 28 ÷ 280 × 100 = 10%
9.A price changes from $500 to $375. Find the percentage decrease.
Answer: 25%
- Change = 500 − 375 = 125
- 125 ÷ 500 × 100 = 25%
10.A price changes from $200 to $176. Find the percentage decrease.
Answer: 12%
- Change = 200 − 176 = 24
- 24 ÷ 200 × 100 = 12%
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