Year 11 Percentage Increase and Decrease Worksheet — Level 2 — Practice Set 4 — Answers
Answer sheet with worked solutions for the Year 11 percentages worksheet.
Success TutoringWorksheetsAnswer sheetYear 11 · Mathematics · PercentagesYear 11 Percentage Increase and Decrease Worksheet — Level 2 — Practice Set 4 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $780 to $819. Find the percentage increase.
Answer: 5%
- Change = 819 − 780 = 39
- 39 ÷ 780 × 100 = 5%
2.A price changes from $400 to $500. Find the percentage increase.
Answer: 25%
- Change = 500 − 400 = 100
- 100 ÷ 400 × 100 = 25%
3.A price changes from $700 to $980. Find the percentage increase.
Answer: 40%
- Change = 980 − 700 = 280
- 280 ÷ 700 × 100 = 40%
4.A price changes from $40 to $32. Find the percentage decrease.
Answer: 20%
- Change = 40 − 32 = 8
- 8 ÷ 40 × 100 = 20%
5.A price changes from $760 to $646. Find the percentage decrease.
Answer: 15%
- Change = 760 − 646 = 114
- 114 ÷ 760 × 100 = 15%
6.A price changes from $800 to $720. Find the percentage decrease.
Answer: 10%
- Change = 800 − 720 = 80
- 80 ÷ 800 × 100 = 10%
7.A price changes from $120 to $138. Find the percentage increase.
Answer: 15%
- Change = 138 − 120 = 18
- 18 ÷ 120 × 100 = 15%
8.A price changes from $120 to $114. Find the percentage decrease.
Answer: 5%
- Change = 120 − 114 = 6
- 6 ÷ 120 × 100 = 5%
9.A price changes from $40 to $44. Find the percentage increase.
Answer: 10%
- Change = 44 − 40 = 4
- 4 ÷ 40 × 100 = 10%
10.A price changes from $60 to $69. Find the percentage increase.
Answer: 15%
- Change = 69 − 60 = 9
- 9 ÷ 60 × 100 = 15%
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