8th Grade Percentage Increase and Decrease Worksheet — Level 3 — Practice Set 2 — Answers
Answer sheet with worked solutions for the 8th Grade percentages worksheet.
Success TutoringWorksheetsAnswer sheet8th Grade · Mathematics · Percentages8th Grade Percentage Increase and Decrease Worksheet — Level 3 — Practice Set 2 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.After a 40% increase, a price is $952. What was the original price?
Answer: $680
- New price = 140% of the original
- Original = 952 ÷ 1.4
- = $680
2.A price changes from $480 to $408. Find the percentage decrease.
Answer: 15%
- Change = 480 − 408 = 72
- 72 ÷ 480 × 100 = 15%
3.A price changes from $40 to $10. Find the percentage decrease.
Answer: 75%
- Change = 40 − 10 = 30
- 30 ÷ 40 × 100 = 75%
4.A price changes from $520 to $676. Find the percentage increase.
Answer: 30%
- Change = 676 − 520 = 156
- 156 ÷ 520 × 100 = 30%
5.After a 25% decrease, a price is $195. What was the original price?
Answer: $260
- New price = 75% of the original
- Original = 195 ÷ 0.75
- = $260
6.After a 15% decrease, a price is $595. What was the original price?
Answer: $700
- New price = 85% of the original
- Original = 595 ÷ 0.85
- = $700
7.A price changes from $500 to $125. Find the percentage decrease.
Answer: 75%
- Change = 500 − 125 = 375
- 375 ÷ 500 × 100 = 75%
8.After a 5% decrease, a price is $456. What was the original price?
Answer: $480
- New price = 95% of the original
- Original = 456 ÷ 0.95
- = $480
9.A price changes from $100 to $130. Find the percentage increase.
Answer: 30%
- Change = 130 − 100 = 30
- 30 ÷ 100 × 100 = 30%
10.After a 10% decrease, a price is $648. What was the original price?
Answer: $720
- New price = 90% of the original
- Original = 648 ÷ 0.9
- = $720
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