Year 10 Percentage Increase and Decrease Worksheet — Level 1 — Practice Set 2 — 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 2 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $280 to $420. Find the percentage increase.
Answer: 50%
- Change = 420 − 280 = 140
- 140 ÷ 280 × 100 = 50%
2.A price changes from $310 to $341. Find the percentage increase.
Answer: 10%
- Change = 341 − 310 = 31
- 31 ÷ 310 × 100 = 10%
3.A price changes from $50 to $40. Find the percentage decrease.
Answer: 20%
- Change = 50 − 40 = 10
- 10 ÷ 50 × 100 = 20%
4.A price changes from $20 to $24. Find the percentage increase.
Answer: 20%
- Change = 24 − 20 = 4
- 4 ÷ 20 × 100 = 20%
5.A price changes from $300 to $240. Find the percentage decrease.
Answer: 20%
- Change = 300 − 240 = 60
- 60 ÷ 300 × 100 = 20%
6.A price changes from $180 to $270. Find the percentage increase.
Answer: 50%
- Change = 270 − 180 = 90
- 90 ÷ 180 × 100 = 50%
7.A price changes from $380 to $285. Find the percentage decrease.
Answer: 25%
- Change = 380 − 285 = 95
- 95 ÷ 380 × 100 = 25%
8.A price changes from $350 to $385. Find the percentage increase.
Answer: 10%
- Change = 385 − 350 = 35
- 35 ÷ 350 × 100 = 10%
9.A price changes from $20 to $18. Find the percentage decrease.
Answer: 10%
- Change = 20 − 18 = 2
- 2 ÷ 20 × 100 = 10%
10.A price changes from $290 to $435. Find the percentage increase.
Answer: 50%
- Change = 435 − 290 = 145
- 145 ÷ 290 × 100 = 50%
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