Year 7 Percentage Increase and Decrease Worksheet — Level 1 — Practice Set 2 — 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 2 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $80 to $60. Find the percentage decrease.
Answer: 25%
- Change = 80 − 60 = 20
- 20 ÷ 80 × 100 = 25%
2.A price changes from $390 to $312. Find the percentage decrease.
Answer: 20%
- Change = 390 − 312 = 78
- 78 ÷ 390 × 100 = 20%
3.A price changes from $20 to $30. Find the percentage increase.
Answer: 50%
- Change = 30 − 20 = 10
- 10 ÷ 20 × 100 = 50%
4.A price changes from $140 to $210. Find the percentage increase.
Answer: 50%
- Change = 210 − 140 = 70
- 70 ÷ 140 × 100 = 50%
5.A price changes from $30 to $24. Find the percentage decrease.
Answer: 20%
- Change = 30 − 24 = 6
- 6 ÷ 30 × 100 = 20%
6.A price changes from $320 to $288. Find the percentage decrease.
Answer: 10%
- Change = 320 − 288 = 32
- 32 ÷ 320 × 100 = 10%
7.A price changes from $240 to $360. Find the percentage increase.
Answer: 50%
- Change = 360 − 240 = 120
- 120 ÷ 240 × 100 = 50%
8.A price changes from $60 to $90. Find the percentage increase.
Answer: 50%
- Change = 90 − 60 = 30
- 30 ÷ 60 × 100 = 50%
9.A price changes from $320 to $400. Find the percentage increase.
Answer: 25%
- Change = 400 − 320 = 80
- 80 ÷ 320 × 100 = 25%
10.A price changes from $120 to $180. Find the percentage increase.
Answer: 50%
- Change = 180 − 120 = 60
- 60 ÷ 120 × 100 = 50%
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