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Percentage Increase & Decrease Practice Worksheet

Solve practical percentage markup and discount problems. 10 word and number problems with complete step-by-step methods.

Percentages & Ratios Medium / Intermediate Middle School (Grades 6–8) 10 Problems
Name:
Date:
Class:
Score: ______ / 10
1)
Increase 80 by 25%:
2)
Decrease 120 by 10%:
3)
Increase 50 by 20%:
4)
Decrease 200 by 15%:
5)
What is the percentage increase from 40 to 50?
6)
What is the percentage decrease from 100 to 75?
7)
Increase 150 by 30%:
8)
Decrease 80 by 20%:
9)
What is the percentage increase from 50 to 70?
10)
What is the percentage decrease from 200 to 150?

Answer Key & Solutions

Percentage Increase & Decrease Practice Worksheet
#1: 100
25% of 80 = 20. 80 + 20 = 100.
#2: 108
10% of 120 = 12. 120 - 12 = 108.
#3: 60
20% of 50 = 10. 50 + 10 = 60.
#4: 170
15% of 200 = 30. 200 - 30 = 170.
#5: 25%
Change = 10. (10 ÷ 40) × 100% = 25%.
#6: 25%
Change = 25. (25 ÷ 100) × 100% = 25%.
#7: 195
30% of 150 is 45. Add to original: 150 + 45 = 195.
#8: 64
20% of 80 is 16. Subtract from original: 80 - 16 = 64.
#9: 40%
Difference is 70 - 50 = 20. Divide by original: (20 ÷ 50) × 100% = 40%.
#10: 25%
Difference is 200 - 150 = 50. Divide by original: (50 ÷ 200) × 100% = 25%.