Year 10 Percentage Increase and Decrease Worksheet — Level 1 — Answers
Answer sheet with worked solutions for the Year 10 percentages worksheet.
Success TutoringWorksheetsAnswer sheetYear 10 · Mathematics · PercentagesYear 10 Percentage Increase and Decrease Worksheet — Level 1 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $140 to $70. Find the percentage decrease.
Answer: 50%
- Change = 140 − 70 = 70
- 70 ÷ 140 × 100 = 50%
2.A price changes from $160 to $176. Find the percentage increase.
Answer: 10%
- Change = 176 − 160 = 16
- 16 ÷ 160 × 100 = 10%
3.A price changes from $50 to $60. Find the percentage increase.
Answer: 20%
- Change = 60 − 50 = 10
- 10 ÷ 50 × 100 = 20%
4.A price changes from $340 to $306. Find the percentage decrease.
Answer: 10%
- Change = 340 − 306 = 34
- 34 ÷ 340 × 100 = 10%
5.A price changes from $380 to $570. Find the percentage increase.
Answer: 50%
- Change = 570 − 380 = 190
- 190 ÷ 380 × 100 = 50%
6.A price changes from $40 to $44. Find the percentage increase.
Answer: 10%
- Change = 44 − 40 = 4
- 4 ÷ 40 × 100 = 10%
7.A price changes from $260 to $312. Find the percentage increase.
Answer: 20%
- Change = 312 − 260 = 52
- 52 ÷ 260 × 100 = 20%
8.A price changes from $160 to $144. Find the percentage decrease.
Answer: 10%
- Change = 160 − 144 = 16
- 16 ÷ 160 × 100 = 10%
9.A price changes from $90 to $81. Find the percentage decrease.
Answer: 10%
- Change = 90 − 81 = 9
- 9 ÷ 90 × 100 = 10%
10.A price changes from $20 to $16. Find the percentage decrease.
Answer: 20%
- Change = 20 − 16 = 4
- 4 ÷ 20 × 100 = 20%
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