Year 10 Percentage Increase and Decrease Worksheet — Level 2 — Answers
Answer sheet with worked solutions for the Year 10 percentages worksheet.
Year 10 Percentage Increase and Decrease Worksheet — Level 2 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $560 to $336. Find the percentage decrease.
Answer: 40%
- Change = 560 − 336 = 224
- 224 ÷ 560 × 100 = 40%
2.A price changes from $440 to $616. Find the percentage increase.
Answer: 40%
- Change = 616 − 440 = 176
- 176 ÷ 440 × 100 = 40%
3.A price changes from $80 to $48. Find the percentage decrease.
Answer: 40%
- Change = 80 − 48 = 32
- 32 ÷ 80 × 100 = 40%
4.A price changes from $300 to $75. Find the percentage decrease.
Answer: 75%
- Change = 300 − 75 = 225
- 225 ÷ 300 × 100 = 75%
5.A price changes from $120 to $84. Find the percentage decrease.
Answer: 30%
- Change = 120 − 84 = 36
- 36 ÷ 120 × 100 = 30%
6.A price changes from $260 to $156. Find the percentage decrease.
Answer: 40%
- Change = 260 − 156 = 104
- 104 ÷ 260 × 100 = 40%
7.A price changes from $580 to $406. Find the percentage decrease.
Answer: 30%
- Change = 580 − 406 = 174
- 174 ÷ 580 × 100 = 30%
8.A price changes from $380 to $665. Find the percentage increase.
Answer: 75%
- Change = 665 − 380 = 285
- 285 ÷ 380 × 100 = 75%
9.A price changes from $780 to $468. Find the percentage decrease.
Answer: 40%
- Change = 780 − 468 = 312
- 312 ÷ 780 × 100 = 40%
10.A price changes from $240 to $312. Find the percentage increase.
Answer: 30%
- Change = 312 − 240 = 72
- 72 ÷ 240 × 100 = 30%
Marking tips
- Give credit for correct method even when the final answer slips — the working shows where the thinking went right.
- For open-ended tasks, use the success criteria as a checklist rather than looking for one "right" answer.
- Celebrate what went well first, then pick one thing to work on next.