Year 9 Percentage Increase and Decrease Worksheet — Level 2 — Practice Set 2 — 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 2 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $660 to $924. Find the percentage increase.
Answer: 40%
- Change = 924 − 660 = 264
- 264 ÷ 660 × 100 = 40%
2.A price changes from $320 to $272. Find the percentage decrease.
Answer: 15%
- Change = 320 − 272 = 48
- 48 ÷ 320 × 100 = 15%
3.A price changes from $700 to $784. Find the percentage increase.
Answer: 12%
- Change = 784 − 700 = 84
- 84 ÷ 700 × 100 = 12%
4.A price changes from $660 to $165. Find the percentage decrease.
Answer: 75%
- Change = 660 − 165 = 495
- 495 ÷ 660 × 100 = 75%
5.A price changes from $800 to $840. Find the percentage increase.
Answer: 5%
- Change = 840 − 800 = 40
- 40 ÷ 800 × 100 = 5%
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 $120 to $96. Find the percentage decrease.
Answer: 20%
- Change = 120 − 96 = 24
- 24 ÷ 120 × 100 = 20%
8.A price changes from $40 to $30. Find the percentage decrease.
Answer: 25%
- Change = 40 − 30 = 10
- 10 ÷ 40 × 100 = 25%
9.A price changes from $280 to $196. Find the percentage decrease.
Answer: 30%
- Change = 280 − 196 = 84
- 84 ÷ 280 × 100 = 30%
10.A price changes from $40 to $34. Find the percentage decrease.
Answer: 15%
- Change = 40 − 34 = 6
- 6 ÷ 40 × 100 = 15%
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