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 $360 to $396. Find the percentage increase.
Answer: 10%
- Change = 396 − 360 = 36
- 36 ÷ 360 × 100 = 10%
2.A price changes from $200 to $100. Find the percentage decrease.
Answer: 50%
- Change = 200 − 100 = 100
- 100 ÷ 200 × 100 = 50%
3.A price changes from $180 to $135. Find the percentage decrease.
Answer: 25%
- Change = 180 − 135 = 45
- 45 ÷ 180 × 100 = 25%
4.A price changes from $230 to $345. Find the percentage increase.
Answer: 50%
- Change = 345 − 230 = 115
- 115 ÷ 230 × 100 = 50%
5.A price changes from $250 to $275. Find the percentage increase.
Answer: 10%
- Change = 275 − 250 = 25
- 25 ÷ 250 × 100 = 10%
6.A price changes from $40 to $36. Find the percentage decrease.
Answer: 10%
- Change = 40 − 36 = 4
- 4 ÷ 40 × 100 = 10%
7.A price changes from $270 to $216. Find the percentage decrease.
Answer: 20%
- Change = 270 − 216 = 54
- 54 ÷ 270 × 100 = 20%
8.A price changes from $70 to $77. Find the percentage increase.
Answer: 10%
- Change = 77 − 70 = 7
- 7 ÷ 70 × 100 = 10%
9.A price changes from $290 to $435. Find the percentage increase.
Answer: 50%
- Change = 435 − 290 = 145
- 145 ÷ 290 × 100 = 50%
10.A price changes from $190 to $285. Find the percentage increase.
Answer: 50%
- Change = 285 − 190 = 95
- 95 ÷ 190 × 100 = 50%
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