Year 9 Percentage Increase and Decrease Worksheet — Level 1 — Practice Set 2 — Answers
Answer sheet with worked solutions for the Year 9 percentages worksheet.
Success TutoringWorksheetsAnswer sheetYear 9 · Mathematics · PercentagesYear 9 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 $80 to $64. Find the percentage decrease.
Answer: 20%
- Change = 80 − 64 = 16
- 16 ÷ 80 × 100 = 20%
2.A price changes from $270 to $216. Find the percentage decrease.
Answer: 20%
- Change = 270 − 216 = 54
- 54 ÷ 270 × 100 = 20%
3.A price changes from $300 to $375. Find the percentage increase.
Answer: 25%
- Change = 375 − 300 = 75
- 75 ÷ 300 × 100 = 25%
4.A price changes from $350 to $280. Find the percentage decrease.
Answer: 20%
- Change = 350 − 280 = 70
- 70 ÷ 350 × 100 = 20%
5.A price changes from $20 to $16. Find the percentage decrease.
Answer: 20%
- Change = 20 − 16 = 4
- 4 ÷ 20 × 100 = 20%
6.A price changes from $80 to $96. Find the percentage increase.
Answer: 20%
- Change = 96 − 80 = 16
- 16 ÷ 80 × 100 = 20%
7.A price changes from $200 to $300. Find the percentage increase.
Answer: 50%
- Change = 300 − 200 = 100
- 100 ÷ 200 × 100 = 50%
8.A price changes from $240 to $288. Find the percentage increase.
Answer: 20%
- Change = 288 − 240 = 48
- 48 ÷ 240 × 100 = 20%
9.A price changes from $110 to $132. Find the percentage increase.
Answer: 20%
- Change = 132 − 110 = 22
- 22 ÷ 110 × 100 = 20%
10.A price changes from $230 to $184. Find the percentage decrease.
Answer: 20%
- Change = 230 − 184 = 46
- 46 ÷ 230 × 100 = 20%
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