7th Grade Percentage Increase and Decrease Worksheet — Level 2 — Answers
Answer sheet with worked solutions for the 7th Grade percentages worksheet.
7th Grade 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 $720 to $576. Find the percentage decrease.
Answer: 20%
- Change = 720 − 576 = 144
- 144 ÷ 720 × 100 = 20%
2.A price changes from $100 to $115. Find the percentage increase.
Answer: 15%
- Change = 115 − 100 = 15
- 15 ÷ 100 × 100 = 15%
3.A price changes from $280 to $252. Find the percentage decrease.
Answer: 10%
- Change = 280 − 252 = 28
- 28 ÷ 280 × 100 = 10%
4.A price changes from $220 to $209. Find the percentage decrease.
Answer: 5%
- Change = 220 − 209 = 11
- 11 ÷ 220 × 100 = 5%
5.A price changes from $480 to $360. Find the percentage decrease.
Answer: 25%
- Change = 480 − 360 = 120
- 120 ÷ 480 × 100 = 25%
6.A price changes from $380 to $266. Find the percentage decrease.
Answer: 30%
- Change = 380 − 266 = 114
- 114 ÷ 380 × 100 = 30%
7.A price changes from $560 to $224. Find the percentage decrease.
Answer: 60%
- Change = 560 − 224 = 336
- 336 ÷ 560 × 100 = 60%
8.A price changes from $580 to $725. Find the percentage increase.
Answer: 25%
- Change = 725 − 580 = 145
- 145 ÷ 580 × 100 = 25%
9.A price changes from $220 to $352. Find the percentage increase.
Answer: 60%
- Change = 352 − 220 = 132
- 132 ÷ 220 × 100 = 60%
10.A price changes from $400 to $420. Find the percentage increase.
Answer: 5%
- Change = 420 − 400 = 20
- 20 ÷ 400 × 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.