Year 8 Percentage Increase and Decrease Worksheet — Level 1 — Practice Set 3 — Answers
Answer sheet with worked solutions for the Year 8 percentages worksheet.
Success TutoringWorksheetsAnswer sheetYear 8 · Mathematics · PercentagesYear 8 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 $220 to $165. Find the percentage decrease.
Answer: 25%
- Change = 220 − 165 = 55
- 55 ÷ 220 × 100 = 25%
2.A price changes from $400 to $480. Find the percentage increase.
Answer: 20%
- Change = 480 − 400 = 80
- 80 ÷ 400 × 100 = 20%
3.A price changes from $30 to $27. Find the percentage decrease.
Answer: 10%
- Change = 30 − 27 = 3
- 3 ÷ 30 × 100 = 10%
4.A price changes from $210 to $168. Find the percentage decrease.
Answer: 20%
- Change = 210 − 168 = 42
- 42 ÷ 210 × 100 = 20%
5.A price changes from $380 to $418. Find the percentage increase.
Answer: 10%
- Change = 418 − 380 = 38
- 38 ÷ 380 × 100 = 10%
6.A price changes from $120 to $60. Find the percentage decrease.
Answer: 50%
- Change = 120 − 60 = 60
- 60 ÷ 120 × 100 = 50%
7.A price changes from $90 to $81. Find the percentage decrease.
Answer: 10%
- Change = 90 − 81 = 9
- 9 ÷ 90 × 100 = 10%
8.A price changes from $40 to $32. Find the percentage decrease.
Answer: 20%
- Change = 40 − 32 = 8
- 8 ÷ 40 × 100 = 20%
9.A price changes from $40 to $50. Find the percentage increase.
Answer: 25%
- Change = 50 − 40 = 10
- 10 ÷ 40 × 100 = 25%
10.A price changes from $140 to $126. Find the percentage decrease.
Answer: 10%
- Change = 140 − 126 = 14
- 14 ÷ 140 × 100 = 10%
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