Year 10 Percentage Increase and Decrease Worksheet — Level 1 — Answers
Answer sheet with worked solutions for the Year 10 percentages worksheet.
Success TutoringWorksheetsAnswer sheetYear 10 · Mathematics · PercentagesYear 10 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 $140 to $105. Find the percentage decrease.
Answer: 25%
- Change = 140 − 105 = 35
- 35 ÷ 140 × 100 = 25%
2.A price changes from $100 to $80. Find the percentage decrease.
Answer: 20%
- Change = 100 − 80 = 20
- 20 ÷ 100 × 100 = 20%
3.A price changes from $170 to $153. Find the percentage decrease.
Answer: 10%
- Change = 170 − 153 = 17
- 17 ÷ 170 × 100 = 10%
4.A price changes from $110 to $88. Find the percentage decrease.
Answer: 20%
- Change = 110 − 88 = 22
- 22 ÷ 110 × 100 = 20%
5.A price changes from $290 to $145. Find the percentage decrease.
Answer: 50%
- Change = 290 − 145 = 145
- 145 ÷ 290 × 100 = 50%
6.A price changes from $60 to $48. Find the percentage decrease.
Answer: 20%
- Change = 60 − 48 = 12
- 12 ÷ 60 × 100 = 20%
7.A price changes from $270 to $243. Find the percentage decrease.
Answer: 10%
- Change = 270 − 243 = 27
- 27 ÷ 270 × 100 = 10%
8.A price changes from $20 to $15. Find the percentage decrease.
Answer: 25%
- Change = 20 − 15 = 5
- 5 ÷ 20 × 100 = 25%
9.A price changes from $230 to $276. Find the percentage increase.
Answer: 20%
- Change = 276 − 230 = 46
- 46 ÷ 230 × 100 = 20%
10.A price changes from $320 to $400. Find the percentage increase.
Answer: 25%
- Change = 400 − 320 = 80
- 80 ÷ 320 × 100 = 25%
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