Year 9 Percentage Increase and Decrease Worksheet — Level 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 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $600 to $840. Find the percentage increase.
Answer: 40%
- Change = 840 − 600 = 240
- 240 ÷ 600 × 100 = 40%
2.A price changes from $460 to $644. Find the percentage increase.
Answer: 40%
- Change = 644 − 460 = 184
- 184 ÷ 460 × 100 = 40%
3.A price changes from $340 to $272. Find the percentage decrease.
Answer: 20%
- Change = 340 − 272 = 68
- 68 ÷ 340 × 100 = 20%
4.A price changes from $480 to $336. Find the percentage decrease.
Answer: 30%
- Change = 480 − 336 = 144
- 144 ÷ 480 × 100 = 30%
5.A price changes from $600 to $480. Find the percentage decrease.
Answer: 20%
- Change = 600 − 480 = 120
- 120 ÷ 600 × 100 = 20%
6.A price changes from $400 to $440. Find the percentage increase.
Answer: 10%
- Change = 440 − 400 = 40
- 40 ÷ 400 × 100 = 10%
7.A price changes from $100 to $25. Find the percentage decrease.
Answer: 75%
- Change = 100 − 25 = 75
- 75 ÷ 100 × 100 = 75%
8.A price changes from $400 to $480. Find the percentage increase.
Answer: 20%
- Change = 480 − 400 = 80
- 80 ÷ 400 × 100 = 20%
9.A price changes from $140 to $245. Find the percentage increase.
Answer: 75%
- Change = 245 − 140 = 105
- 105 ÷ 140 × 100 = 75%
10.A price changes from $240 to $228. Find the percentage decrease.
Answer: 5%
- Change = 240 − 228 = 12
- 12 ÷ 240 × 100 = 5%
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