Year 9 Percentage Increase and Decrease Worksheet — Level 2 — Practice Set 3 — 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 3 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $620 to $589. Find the percentage decrease.
Answer: 5%
- Change = 620 − 589 = 31
- 31 ÷ 620 × 100 = 5%
2.A price changes from $480 to $672. Find the percentage increase.
Answer: 40%
- Change = 672 − 480 = 192
- 192 ÷ 480 × 100 = 40%
3.A price changes from $440 to $550. Find the percentage increase.
Answer: 25%
- Change = 550 − 440 = 110
- 110 ÷ 440 × 100 = 25%
4.A price changes from $300 to $210. Find the percentage decrease.
Answer: 30%
- Change = 300 − 210 = 90
- 90 ÷ 300 × 100 = 30%
5.A price changes from $440 to $484. Find the percentage increase.
Answer: 10%
- Change = 484 − 440 = 44
- 44 ÷ 440 × 100 = 10%
6.A price changes from $220 to $132. Find the percentage decrease.
Answer: 40%
- Change = 220 − 132 = 88
- 88 ÷ 220 × 100 = 40%
7.A price changes from $600 to $960. Find the percentage increase.
Answer: 60%
- Change = 960 − 600 = 360
- 360 ÷ 600 × 100 = 60%
8.A price changes from $140 to $126. Find the percentage decrease.
Answer: 10%
- Change = 140 − 126 = 14
- 14 ÷ 140 × 100 = 10%
9.A price changes from $600 to $840. Find the percentage increase.
Answer: 40%
- Change = 840 − 600 = 240
- 240 ÷ 600 × 100 = 40%
10.A price changes from $80 to $100. Find the percentage increase.
Answer: 25%
- Change = 100 − 80 = 20
- 20 ÷ 80 × 100 = 25%
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