Year 9 Percentage Increase and Decrease Worksheet — Level 1 — 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 1 — Practice Set 4 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $250 to $225. Find the percentage decrease.
Answer: 10%
- Change = 250 − 225 = 25
- 25 ÷ 250 × 100 = 10%
2.A price changes from $340 to $374. Find the percentage increase.
Answer: 10%
- Change = 374 − 340 = 34
- 34 ÷ 340 × 100 = 10%
3.A price changes from $380 to $304. Find the percentage decrease.
Answer: 20%
- Change = 380 − 304 = 76
- 76 ÷ 380 × 100 = 20%
4.A price changes from $240 to $216. Find the percentage decrease.
Answer: 10%
- Change = 240 − 216 = 24
- 24 ÷ 240 × 100 = 10%
5.A price changes from $260 to $325. Find the percentage increase.
Answer: 25%
- Change = 325 − 260 = 65
- 65 ÷ 260 × 100 = 25%
6.A price changes from $300 to $270. Find the percentage decrease.
Answer: 10%
- Change = 300 − 270 = 30
- 30 ÷ 300 × 100 = 10%
7.A price changes from $40 to $36. Find the percentage decrease.
Answer: 10%
- Change = 40 − 36 = 4
- 4 ÷ 40 × 100 = 10%
8.A price changes from $30 to $45. Find the percentage increase.
Answer: 50%
- Change = 45 − 30 = 15
- 15 ÷ 30 × 100 = 50%
9.A price changes from $170 to $204. Find the percentage increase.
Answer: 20%
- Change = 204 − 170 = 34
- 34 ÷ 170 × 100 = 20%
10.A price changes from $320 to $352. Find the percentage increase.
Answer: 10%
- Change = 352 − 320 = 32
- 32 ÷ 320 × 100 = 10%
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