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 $500 to $440. Find the percentage decrease.
Answer: 12%
- Change = 500 − 440 = 60
- 60 ÷ 500 × 100 = 12%
2.A price changes from $420 to $483. Find the percentage increase.
Answer: 15%
- Change = 483 − 420 = 63
- 63 ÷ 420 × 100 = 15%
3.A price changes from $780 to $936. Find the percentage increase.
Answer: 20%
- Change = 936 − 780 = 156
- 156 ÷ 780 × 100 = 20%
4.A price changes from $700 to $280. Find the percentage decrease.
Answer: 60%
- Change = 700 − 280 = 420
- 420 ÷ 700 × 100 = 60%
5.A price changes from $140 to $168. Find the percentage increase.
Answer: 20%
- Change = 168 − 140 = 28
- 28 ÷ 140 × 100 = 20%
6.A price changes from $280 to $336. Find the percentage increase.
Answer: 20%
- Change = 336 − 280 = 56
- 56 ÷ 280 × 100 = 20%
7.A price changes from $180 to $126. Find the percentage decrease.
Answer: 30%
- Change = 180 − 126 = 54
- 54 ÷ 180 × 100 = 30%
8.A price changes from $180 to $315. Find the percentage increase.
Answer: 75%
- Change = 315 − 180 = 135
- 135 ÷ 180 × 100 = 75%
9.A price changes from $640 to $1120. Find the percentage increase.
Answer: 75%
- Change = 1120 − 640 = 480
- 480 ÷ 640 × 100 = 75%
10.A price changes from $200 to $80. Find the percentage decrease.
Answer: 60%
- Change = 200 − 80 = 120
- 120 ÷ 200 × 100 = 60%
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