Year 10 Percentage Increase and Decrease Worksheet — Level 1 — Practice Set 4 — 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 4 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $50 to $75. Find the percentage increase.
Answer: 50%
- Change = 75 − 50 = 25
- 25 ÷ 50 × 100 = 50%
2.A price changes from $240 to $120. Find the percentage decrease.
Answer: 50%
- Change = 240 − 120 = 120
- 120 ÷ 240 × 100 = 50%
3.A price changes from $200 to $250. Find the percentage increase.
Answer: 25%
- Change = 250 − 200 = 50
- 50 ÷ 200 × 100 = 25%
4.A price changes from $360 to $396. Find the percentage increase.
Answer: 10%
- Change = 396 − 360 = 36
- 36 ÷ 360 × 100 = 10%
5.A price changes from $40 to $48. Find the percentage increase.
Answer: 20%
- Change = 48 − 40 = 8
- 8 ÷ 40 × 100 = 20%
6.A price changes from $140 to $70. Find the percentage decrease.
Answer: 50%
- Change = 140 − 70 = 70
- 70 ÷ 140 × 100 = 50%
7.A price changes from $80 to $120. Find the percentage increase.
Answer: 50%
- Change = 120 − 80 = 40
- 40 ÷ 80 × 100 = 50%
8.A price changes from $50 to $40. Find the percentage decrease.
Answer: 20%
- Change = 50 − 40 = 10
- 10 ÷ 50 × 100 = 20%
9.A price changes from $60 to $72. Find the percentage increase.
Answer: 20%
- Change = 72 − 60 = 12
- 12 ÷ 60 × 100 = 20%
10.A price changes from $290 to $145. Find the percentage decrease.
Answer: 50%
- Change = 290 − 145 = 145
- 145 ÷ 290 × 100 = 50%
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