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 $190 to $152. Find the percentage decrease.
Answer: 20%
- Change = 190 − 152 = 38
- 38 ÷ 190 × 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 $30 to $24. Find the percentage decrease.
Answer: 20%
- Change = 30 − 24 = 6
- 6 ÷ 30 × 100 = 20%
4.A price changes from $180 to $90. Find the percentage decrease.
Answer: 50%
- Change = 180 − 90 = 90
- 90 ÷ 180 × 100 = 50%
5.A price changes from $230 to $207. Find the percentage decrease.
Answer: 10%
- Change = 230 − 207 = 23
- 23 ÷ 230 × 100 = 10%
6.A price changes from $100 to $50. Find the percentage decrease.
Answer: 50%
- Change = 100 − 50 = 50
- 50 ÷ 100 × 100 = 50%
7.A price changes from $340 to $408. Find the percentage increase.
Answer: 20%
- Change = 408 − 340 = 68
- 68 ÷ 340 × 100 = 20%
8.A price changes from $200 to $150. Find the percentage decrease.
Answer: 25%
- Change = 200 − 150 = 50
- 50 ÷ 200 × 100 = 25%
9.A price changes from $40 to $44. Find the percentage increase.
Answer: 10%
- Change = 44 − 40 = 4
- 4 ÷ 40 × 100 = 10%
10.A price changes from $130 to $143. Find the percentage increase.
Answer: 10%
- Change = 143 − 130 = 13
- 13 ÷ 130 × 100 = 10%
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