Year 7 Percentage Increase and Decrease Worksheet — Level 1 — 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 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $210 to $189. Find the percentage decrease.
Answer: 10%
- Change = 210 − 189 = 21
- 21 ÷ 210 × 100 = 10%
2.A price changes from $140 to $168. Find the percentage increase.
Answer: 20%
- Change = 168 − 140 = 28
- 28 ÷ 140 × 100 = 20%
3.A price changes from $170 to $204. Find the percentage increase.
Answer: 20%
- Change = 204 − 170 = 34
- 34 ÷ 170 × 100 = 20%
4.A price changes from $380 to $190. Find the percentage decrease.
Answer: 50%
- Change = 380 − 190 = 190
- 190 ÷ 380 × 100 = 50%
5.A price changes from $40 to $20. Find the percentage decrease.
Answer: 50%
- Change = 40 − 20 = 20
- 20 ÷ 40 × 100 = 50%
6.A price changes from $400 to $500. Find the percentage increase.
Answer: 25%
- Change = 500 − 400 = 100
- 100 ÷ 400 × 100 = 25%
7.A price changes from $260 to $312. Find the percentage increase.
Answer: 20%
- Change = 312 − 260 = 52
- 52 ÷ 260 × 100 = 20%
8.A price changes from $200 to $220. Find the percentage increase.
Answer: 10%
- Change = 220 − 200 = 20
- 20 ÷ 200 × 100 = 10%
9.A price changes from $400 to $200. Find the percentage decrease.
Answer: 50%
- Change = 400 − 200 = 200
- 200 ÷ 400 × 100 = 50%
10.A price changes from $280 to $224. Find the percentage decrease.
Answer: 20%
- Change = 280 − 224 = 56
- 56 ÷ 280 × 100 = 20%
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