Year 7 Percentage Increase and Decrease Worksheet — Level 1 — Practice Set 3 — Answers
Answer sheet with worked solutions for the Year 7 percentages worksheet.
Success TutoringWorksheetsAnswer sheetYear 7 · Mathematics · PercentagesYear 7 Percentage Increase and Decrease Worksheet — Level 1 — Practice Set 3 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $160 to $144. Find the percentage decrease.
Answer: 10%
- Change = 160 − 144 = 16
- 16 ÷ 160 × 100 = 10%
2.A price changes from $220 to $198. Find the percentage decrease.
Answer: 10%
- Change = 220 − 198 = 22
- 22 ÷ 220 × 100 = 10%
3.A price changes from $360 to $180. Find the percentage decrease.
Answer: 50%
- Change = 360 − 180 = 180
- 180 ÷ 360 × 100 = 50%
4.A price changes from $330 to $264. Find the percentage decrease.
Answer: 20%
- Change = 330 − 264 = 66
- 66 ÷ 330 × 100 = 20%
5.A price changes from $320 to $160. Find the percentage decrease.
Answer: 50%
- Change = 320 − 160 = 160
- 160 ÷ 320 × 100 = 50%
6.A price changes from $280 to $252. Find the percentage decrease.
Answer: 10%
- Change = 280 − 252 = 28
- 28 ÷ 280 × 100 = 10%
7.A price changes from $300 to $225. Find the percentage decrease.
Answer: 25%
- Change = 300 − 225 = 75
- 75 ÷ 300 × 100 = 25%
8.A price changes from $180 to $135. Find the percentage decrease.
Answer: 25%
- Change = 180 − 135 = 45
- 45 ÷ 180 × 100 = 25%
9.A price changes from $180 to $90. Find the percentage decrease.
Answer: 50%
- Change = 180 − 90 = 90
- 90 ÷ 180 × 100 = 50%
10.A price changes from $300 to $240. Find the percentage decrease.
Answer: 20%
- Change = 300 − 240 = 60
- 60 ÷ 300 × 100 = 20%
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