Year 7 Percentage Increase and Decrease Worksheet — Level 3 — 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 3 — Practice Set 2 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $700 to $490. Find the percentage decrease.
Answer: 30%
- Change = 700 − 490 = 210
- 210 ÷ 700 × 100 = 30%
2.A price changes from $760 to $912. Find the percentage increase.
Answer: 20%
- Change = 912 − 760 = 152
- 152 ÷ 760 × 100 = 20%
3.After a 5% increase, a price is $756. What was the original price?
Answer: $720
- New price = 105% of the original
- Original = 756 ÷ 1.05
- = $720
4.A price changes from $580 to $696. Find the percentage increase.
Answer: 20%
- Change = 696 − 580 = 116
- 116 ÷ 580 × 100 = 20%
5.After a 40% increase, a price is $476. What was the original price?
Answer: $340
- New price = 140% of the original
- Original = 476 ÷ 1.4
- = $340
6.A price changes from $120 to $132. Find the percentage increase.
Answer: 10%
- Change = 132 − 120 = 12
- 12 ÷ 120 × 100 = 10%
7.A price changes from $660 to $627. Find the percentage decrease.
Answer: 5%
- Change = 660 − 627 = 33
- 33 ÷ 660 × 100 = 5%
8.A price changes from $400 to $500. Find the percentage increase.
Answer: 25%
- Change = 500 − 400 = 100
- 100 ÷ 400 × 100 = 25%
9.A price changes from $640 to $576. Find the percentage decrease.
Answer: 10%
- Change = 640 − 576 = 64
- 64 ÷ 640 × 100 = 10%
10.A price changes from $140 to $119. Find the percentage decrease.
Answer: 15%
- Change = 140 − 119 = 21
- 21 ÷ 140 × 100 = 15%
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