Year 7 Percentage Increase and Decrease Worksheet — Level 1 — Practice Set 4 — Answers
Answer sheet with worked solutions for the Year 7 percentages worksheet.
Success TutoringWorksheetsAnswer sheetYear 7 · Mathematics · PercentagesYear 7 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 $20 to $16. Find the percentage decrease.
Answer: 20%
- Change = 20 − 16 = 4
- 4 ÷ 20 × 100 = 20%
2.A price changes from $70 to $77. Find the percentage increase.
Answer: 10%
- Change = 77 − 70 = 7
- 7 ÷ 70 × 100 = 10%
3.A price changes from $150 to $135. Find the percentage decrease.
Answer: 10%
- Change = 150 − 135 = 15
- 15 ÷ 150 × 100 = 10%
4.A price changes from $140 to $154. Find the percentage increase.
Answer: 10%
- Change = 154 − 140 = 14
- 14 ÷ 140 × 100 = 10%
5.A price changes from $90 to $108. Find the percentage increase.
Answer: 20%
- Change = 108 − 90 = 18
- 18 ÷ 90 × 100 = 20%
6.A price changes from $30 to $36. Find the percentage increase.
Answer: 20%
- Change = 36 − 30 = 6
- 6 ÷ 30 × 100 = 20%
7.A price changes from $230 to $253. Find the percentage increase.
Answer: 10%
- Change = 253 − 230 = 23
- 23 ÷ 230 × 100 = 10%
8.A price changes from $50 to $60. Find the percentage increase.
Answer: 20%
- Change = 60 − 50 = 10
- 10 ÷ 50 × 100 = 20%
9.A price changes from $100 to $80. Find the percentage decrease.
Answer: 20%
- Change = 100 − 80 = 20
- 20 ÷ 100 × 100 = 20%
10.A price changes from $60 to $45. Find the percentage decrease.
Answer: 25%
- Change = 60 − 45 = 15
- 15 ÷ 60 × 100 = 25%
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