Year 9 Percentage Increase and Decrease Worksheet — Level 2 — Practice Set 4 — 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 2 — Practice Set 4 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $560 to $728. Find the percentage increase.
Answer: 30%
- Change = 728 − 560 = 168
- 168 ÷ 560 × 100 = 30%
2.A price changes from $440 to $308. Find the percentage decrease.
Answer: 30%
- Change = 440 − 308 = 132
- 132 ÷ 440 × 100 = 30%
3.A price changes from $80 to $72. Find the percentage decrease.
Answer: 10%
- Change = 80 − 72 = 8
- 8 ÷ 80 × 100 = 10%
4.A price changes from $480 to $360. Find the percentage decrease.
Answer: 25%
- Change = 480 − 360 = 120
- 120 ÷ 480 × 100 = 25%
5.A price changes from $320 to $560. Find the percentage increase.
Answer: 75%
- Change = 560 − 320 = 240
- 240 ÷ 320 × 100 = 75%
6.A price changes from $500 to $440. Find the percentage decrease.
Answer: 12%
- Change = 500 − 440 = 60
- 60 ÷ 500 × 100 = 12%
7.A price changes from $500 to $550. Find the percentage increase.
Answer: 10%
- Change = 550 − 500 = 50
- 50 ÷ 500 × 100 = 10%
8.A price changes from $560 to $672. Find the percentage increase.
Answer: 20%
- Change = 672 − 560 = 112
- 112 ÷ 560 × 100 = 20%
9.A price changes from $780 to $1365. Find the percentage increase.
Answer: 75%
- Change = 1365 − 780 = 585
- 585 ÷ 780 × 100 = 75%
10.A price changes from $240 to $420. Find the percentage increase.
Answer: 75%
- Change = 420 − 240 = 180
- 180 ÷ 240 × 100 = 75%
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