Year 7 Percentage Increase and Decrease Worksheet — Level 1 — Practice Set 2 — 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 2 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $80 to $40. Find the percentage decrease.
Answer: 50%
- Change = 80 − 40 = 40
- 40 ÷ 80 × 100 = 50%
2.A price changes from $190 to $285. Find the percentage increase.
Answer: 50%
- Change = 285 − 190 = 95
- 95 ÷ 190 × 100 = 50%
3.A price changes from $260 to $234. Find the percentage decrease.
Answer: 10%
- Change = 260 − 234 = 26
- 26 ÷ 260 × 100 = 10%
4.A price changes from $290 to $348. Find the percentage increase.
Answer: 20%
- Change = 348 − 290 = 58
- 58 ÷ 290 × 100 = 20%
5.A price changes from $80 to $100. Find the percentage increase.
Answer: 25%
- Change = 100 − 80 = 20
- 20 ÷ 80 × 100 = 25%
6.A price changes from $170 to $85. Find the percentage decrease.
Answer: 50%
- Change = 170 − 85 = 85
- 85 ÷ 170 × 100 = 50%
7.A price changes from $160 to $128. Find the percentage decrease.
Answer: 20%
- Change = 160 − 128 = 32
- 32 ÷ 160 × 100 = 20%
8.A price changes from $100 to $125. Find the percentage increase.
Answer: 25%
- Change = 125 − 100 = 25
- 25 ÷ 100 × 100 = 25%
9.A price changes from $310 to $465. Find the percentage increase.
Answer: 50%
- Change = 465 − 310 = 155
- 155 ÷ 310 × 100 = 50%
10.A price changes from $120 to $90. Find the percentage decrease.
Answer: 25%
- Change = 120 − 90 = 30
- 30 ÷ 120 × 100 = 25%
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