Year 9 Percentage Increase and Decrease Worksheet — Level 1 — 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 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $300 to $375. Find the percentage increase.
Answer: 25%
- Change = 375 − 300 = 75
- 75 ÷ 300 × 100 = 25%
2.A price changes from $360 to $396. Find the percentage increase.
Answer: 10%
- Change = 396 − 360 = 36
- 36 ÷ 360 × 100 = 10%
3.A price changes from $250 to $275. Find the percentage increase.
Answer: 10%
- Change = 275 − 250 = 25
- 25 ÷ 250 × 100 = 10%
4.A price changes from $250 to $125. Find the percentage decrease.
Answer: 50%
- Change = 250 − 125 = 125
- 125 ÷ 250 × 100 = 50%
5.A price changes from $20 to $15. Find the percentage decrease.
Answer: 25%
- Change = 20 − 15 = 5
- 5 ÷ 20 × 100 = 25%
6.A price changes from $40 to $44. Find the percentage increase.
Answer: 10%
- Change = 44 − 40 = 4
- 4 ÷ 40 × 100 = 10%
7.A price changes from $90 to $81. Find the percentage decrease.
Answer: 10%
- Change = 90 − 81 = 9
- 9 ÷ 90 × 100 = 10%
8.A price changes from $90 to $72. Find the percentage decrease.
Answer: 20%
- Change = 90 − 72 = 18
- 18 ÷ 90 × 100 = 20%
9.A price changes from $370 to $407. Find the percentage increase.
Answer: 10%
- Change = 407 − 370 = 37
- 37 ÷ 370 × 100 = 10%
10.A price changes from $20 to $24. Find the percentage increase.
Answer: 20%
- Change = 24 − 20 = 4
- 4 ÷ 20 × 100 = 20%
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