Year 10 Percentage Increase and Decrease Worksheet — Level 1 — Practice Set 3 — 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 — Practice Set 3 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $290 to $435. Find the percentage increase.
Answer: 50%
- Change = 435 − 290 = 145
- 145 ÷ 290 × 100 = 50%
2.A price changes from $350 to $175. Find the percentage decrease.
Answer: 50%
- Change = 350 − 175 = 175
- 175 ÷ 350 × 100 = 50%
3.A price changes from $200 to $100. Find the percentage decrease.
Answer: 50%
- Change = 200 − 100 = 100
- 100 ÷ 200 × 100 = 50%
4.A price changes from $160 to $176. Find the percentage increase.
Answer: 10%
- Change = 176 − 160 = 16
- 16 ÷ 160 × 100 = 10%
5.A price changes from $250 to $225. Find the percentage decrease.
Answer: 10%
- Change = 250 − 225 = 25
- 25 ÷ 250 × 100 = 10%
6.A price changes from $140 to $154. Find the percentage increase.
Answer: 10%
- Change = 154 − 140 = 14
- 14 ÷ 140 × 100 = 10%
7.A price changes from $80 to $100. Find the percentage increase.
Answer: 25%
- Change = 100 − 80 = 20
- 20 ÷ 80 × 100 = 25%
8.A price changes from $120 to $132. Find the percentage increase.
Answer: 10%
- Change = 132 − 120 = 12
- 12 ÷ 120 × 100 = 10%
9.A price changes from $220 to $165. Find the percentage decrease.
Answer: 25%
- Change = 220 − 165 = 55
- 55 ÷ 220 × 100 = 25%
10.A price changes from $370 to $296. Find the percentage decrease.
Answer: 20%
- Change = 370 − 296 = 74
- 74 ÷ 370 × 100 = 20%
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