8th Grade Percentage Increase and Decrease Worksheet — Level 1 — Practice Set 3 — 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 1 — Practice Set 3 — Answers
Percentage change = change ÷ original amount × 100. Always divide by the original amount.
1.A price changes from $160 to $200. Find the percentage increase.
Answer: 25%
- Change = 200 − 160 = 40
- 40 ÷ 160 × 100 = 25%
2.A price changes from $210 to $231. Find the percentage increase.
Answer: 10%
- Change = 231 − 210 = 21
- 21 ÷ 210 × 100 = 10%
3.A price changes from $160 to $80. Find the percentage decrease.
Answer: 50%
- Change = 160 − 80 = 80
- 80 ÷ 160 × 100 = 50%
4.A price changes from $80 to $100. Find the percentage increase.
Answer: 25%
- Change = 100 − 80 = 20
- 20 ÷ 80 × 100 = 25%
5.A price changes from $60 to $45. Find the percentage decrease.
Answer: 25%
- Change = 60 − 45 = 15
- 15 ÷ 60 × 100 = 25%
6.A price changes from $100 to $50. Find the percentage decrease.
Answer: 50%
- Change = 100 − 50 = 50
- 50 ÷ 100 × 100 = 50%
7.A price changes from $280 to $224. Find the percentage decrease.
Answer: 20%
- Change = 280 − 224 = 56
- 56 ÷ 280 × 100 = 20%
8.A price changes from $320 to $400. Find the percentage increase.
Answer: 25%
- Change = 400 − 320 = 80
- 80 ÷ 320 × 100 = 25%
9.A price changes from $120 to $60. Find the percentage decrease.
Answer: 50%
- Change = 120 − 60 = 60
- 60 ÷ 120 × 100 = 50%
10.A price changes from $130 to $195. Find the percentage increase.
Answer: 50%
- Change = 195 − 130 = 65
- 65 ÷ 130 × 100 = 50%
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