Year 8 Percentage Increase and Decrease Worksheet — Level 1 — Practice Set 3 — Answers
Answer sheet with worked solutions for the Year 8 percentages worksheet.
Success TutoringWorksheetsAnswer sheetYear 8 · Mathematics · PercentagesYear 8 Percentage Increase and Decrease Worksheet — Level 1 — Practice Set 3 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $100 to $80. Find the percentage decrease.
Answer: 20%
- Change = 100 − 80 = 20
- 20 ÷ 100 × 100 = 20%
2.A price changes from $20 to $24. Find the percentage increase.
Answer: 20%
- Change = 24 − 20 = 4
- 4 ÷ 20 × 100 = 20%
3.A price changes from $130 to $104. Find the percentage decrease.
Answer: 20%
- Change = 130 − 104 = 26
- 26 ÷ 130 × 100 = 20%
4.A price changes from $20 to $22. Find the percentage increase.
Answer: 10%
- Change = 22 − 20 = 2
- 2 ÷ 20 × 100 = 10%
5.A price changes from $340 to $306. Find the percentage decrease.
Answer: 10%
- Change = 340 − 306 = 34
- 34 ÷ 340 × 100 = 10%
6.A price changes from $320 to $240. Find the percentage decrease.
Answer: 25%
- Change = 320 − 240 = 80
- 80 ÷ 320 × 100 = 25%
7.A price changes from $60 to $48. Find the percentage decrease.
Answer: 20%
- Change = 60 − 48 = 12
- 12 ÷ 60 × 100 = 20%
8.A price changes from $360 to $288. Find the percentage decrease.
Answer: 20%
- Change = 360 − 288 = 72
- 72 ÷ 360 × 100 = 20%
9.A price changes from $50 to $40. Find the percentage decrease.
Answer: 20%
- Change = 50 − 40 = 10
- 10 ÷ 50 × 100 = 20%
10.A price changes from $200 to $180. Find the percentage decrease.
Answer: 10%
- Change = 200 − 180 = 20
- 20 ÷ 200 × 100 = 10%
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