10th Grade Percentage Increase and Decrease Worksheet — Level 2 — Practice Set 2 — Answers
Answer sheet with worked solutions for the 10th Grade percentages worksheet.
Success TutoringWorksheetsAnswer sheet10th Grade · Mathematics · Percentages10th Grade Percentage Increase and Decrease Worksheet — Level 2 — Practice Set 2 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $480 to $504. Find the percentage increase.
Answer: 5%
- Change = 504 − 480 = 24
- 24 ÷ 480 × 100 = 5%
2.A price changes from $280 to $364. Find the percentage increase.
Answer: 30%
- Change = 364 − 280 = 84
- 84 ÷ 280 × 100 = 30%
3.A price changes from $620 to $496. Find the percentage decrease.
Answer: 20%
- Change = 620 − 496 = 124
- 124 ÷ 620 × 100 = 20%
4.A price changes from $320 to $128. Find the percentage decrease.
Answer: 60%
- Change = 320 − 128 = 192
- 192 ÷ 320 × 100 = 60%
5.A price changes from $660 to $759. Find the percentage increase.
Answer: 15%
- Change = 759 − 660 = 99
- 99 ÷ 660 × 100 = 15%
6.A price changes from $540 to $675. Find the percentage increase.
Answer: 25%
- Change = 675 − 540 = 135
- 135 ÷ 540 × 100 = 25%
7.A price changes from $680 to $476. Find the percentage decrease.
Answer: 30%
- Change = 680 − 476 = 204
- 204 ÷ 680 × 100 = 30%
8.A price changes from $560 to $336. Find the percentage decrease.
Answer: 40%
- Change = 560 − 336 = 224
- 224 ÷ 560 × 100 = 40%
9.A price changes from $540 to $378. Find the percentage decrease.
Answer: 30%
- Change = 540 − 378 = 162
- 162 ÷ 540 × 100 = 30%
10.A price changes from $560 to $532. Find the percentage decrease.
Answer: 5%
- Change = 560 − 532 = 28
- 28 ÷ 560 × 100 = 5%
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.