Year 10 Percentage Increase and Decrease Worksheet — Level 2 — Practice Set 3 — Answers
Answer sheet with worked solutions for the Year 10 percentages worksheet.
Success TutoringWorksheetsAnswer sheetYear 10 · Mathematics · PercentagesYear 10 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 $580 to $406. Find the percentage decrease.
Answer: 30%
- Change = 580 − 406 = 174
- 174 ÷ 580 × 100 = 30%
2.A price changes from $440 to $484. Find the percentage increase.
Answer: 10%
- Change = 484 − 440 = 44
- 44 ÷ 440 × 100 = 10%
3.A price changes from $420 to $315. Find the percentage decrease.
Answer: 25%
- Change = 420 − 315 = 105
- 105 ÷ 420 × 100 = 25%
4.A price changes from $460 to $115. Find the percentage decrease.
Answer: 75%
- Change = 460 − 115 = 345
- 345 ÷ 460 × 100 = 75%
5.A price changes from $580 to $667. Find the percentage increase.
Answer: 15%
- Change = 667 − 580 = 87
- 87 ÷ 580 × 100 = 15%
6.A price changes from $720 to $864. Find the percentage increase.
Answer: 20%
- Change = 864 − 720 = 144
- 144 ÷ 720 × 100 = 20%
7.A price changes from $400 to $240. Find the percentage decrease.
Answer: 40%
- Change = 400 − 240 = 160
- 160 ÷ 400 × 100 = 40%
8.A price changes from $680 to $850. Find the percentage increase.
Answer: 25%
- Change = 850 − 680 = 170
- 170 ÷ 680 × 100 = 25%
9.A price changes from $340 to $323. Find the percentage decrease.
Answer: 5%
- Change = 340 − 323 = 17
- 17 ÷ 340 × 100 = 5%
10.A price changes from $120 to $150. Find the percentage increase.
Answer: 25%
- Change = 150 − 120 = 30
- 30 ÷ 120 × 100 = 25%
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