Year 9 Percentage Increase and Decrease Worksheet — Level 2 — 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 2 — Practice Set 2 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $400 to $640. Find the percentage increase.
Answer: 60%
- Change = 640 − 400 = 240
- 240 ÷ 400 × 100 = 60%
2.A price changes from $320 to $304. Find the percentage decrease.
Answer: 5%
- Change = 320 − 304 = 16
- 16 ÷ 320 × 100 = 5%
3.A price changes from $580 to $928. Find the percentage increase.
Answer: 60%
- Change = 928 − 580 = 348
- 348 ÷ 580 × 100 = 60%
4.A price changes from $620 to $434. Find the percentage decrease.
Answer: 30%
- Change = 620 − 434 = 186
- 186 ÷ 620 × 100 = 30%
5.A price changes from $580 to $667. Find the percentage increase.
Answer: 15%
- Change = 667 − 580 = 87
- 87 ÷ 580 × 100 = 15%
6.A price changes from $760 to $684. Find the percentage decrease.
Answer: 10%
- Change = 760 − 684 = 76
- 76 ÷ 760 × 100 = 10%
7.A price changes from $120 to $114. Find the percentage decrease.
Answer: 5%
- Change = 120 − 114 = 6
- 6 ÷ 120 × 100 = 5%
8.A price changes from $380 to $152. Find the percentage decrease.
Answer: 60%
- Change = 380 − 152 = 228
- 228 ÷ 380 × 100 = 60%
9.A price changes from $300 to $285. Find the percentage decrease.
Answer: 5%
- Change = 300 − 285 = 15
- 15 ÷ 300 × 100 = 5%
10.A price changes from $120 to $30. Find the percentage decrease.
Answer: 75%
- Change = 120 − 30 = 90
- 90 ÷ 120 × 100 = 75%
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