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 $280 to $252. Find the percentage decrease.
Answer: 10%
- Change = 280 − 252 = 28
- 28 ÷ 280 × 100 = 10%
2.A price changes from $180 to $144. Find the percentage decrease.
Answer: 20%
- Change = 180 − 144 = 36
- 36 ÷ 180 × 100 = 20%
3.A price changes from $230 to $276. Find the percentage increase.
Answer: 20%
- Change = 276 − 230 = 46
- 46 ÷ 230 × 100 = 20%
4.A price changes from $280 to $210. Find the percentage decrease.
Answer: 25%
- Change = 280 − 210 = 70
- 70 ÷ 280 × 100 = 25%
5.A price changes from $180 to $135. Find the percentage decrease.
Answer: 25%
- Change = 180 − 135 = 45
- 45 ÷ 180 × 100 = 25%
6.A price changes from $90 to $135. Find the percentage increase.
Answer: 50%
- Change = 135 − 90 = 45
- 45 ÷ 90 × 100 = 50%
7.A price changes from $380 to $190. Find the percentage decrease.
Answer: 50%
- Change = 380 − 190 = 190
- 190 ÷ 380 × 100 = 50%
8.A price changes from $20 to $30. Find the percentage increase.
Answer: 50%
- Change = 30 − 20 = 10
- 10 ÷ 20 × 100 = 50%
9.A price changes from $120 to $60. Find the percentage decrease.
Answer: 50%
- Change = 120 − 60 = 60
- 60 ÷ 120 × 100 = 50%
10.A price changes from $220 to $198. Find the percentage decrease.
Answer: 10%
- Change = 220 − 198 = 22
- 22 ÷ 220 × 100 = 10%
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