Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 59 · 40 questions

The fast method (One-step multiplier): Increase by p%: multiply by (100 + p)% — up 20% is × 1.2. Decrease by p%: multiply by (100 − p)% — down 25% is × 0.75. Easy way to multiply: × the whole number (115 or 75), then ÷ 100.

1. 1.240 increased by 5% =
2. 2.500 increased by 35% =
3. 3.264 decreased by 25% =
4. 4.60 increased by 35% =
5. 5.754 decreased by 50% =
6. 6.380 decreased by 15% =
7. 7.208 increased by 75% =
8. 8.405 decreased by 20% =
9. 9.624 increased by 25% =
10. 10.760 increased by 40% =
11. 11.404 decreased by 75% =
12. 12.190 increased by 30% =
13. 13.620 increased by 15% =
14. 14.116 decreased by 25% =
15. 15.680 decreased by 15% =
16. 16.685 decreased by 40% =
17. 17.610 decreased by 40% =
18. 18.795 increased by 20% =
19. 19.380 increased by 25% =
20. 20.325 increased by 8% =
21. 21.796 increased by 25% =
22. 22.204 increased by 75% =
23. 23.785 increased by 40% =
24. 24.515 increased by 60% =
25. 25.180 decreased by 5% =
26. 26.220 increased by 35% =
27. 27.800 decreased by 5% =
28. 28.636 increased by 25% =
29. 29.620 decreased by 20% =
30. 30.420 increased by 35% =
31. 31.360 decreased by 15% =
32. 32.200 increased by 15% =
33. 33.580 decreased by 5% =
34. 34.700 decreased by 40% =
35. 35.50 increased by 8% =
36. 36.175 increased by 12% =
37. 37.494 increased by 50% =
38. 38.750 decreased by 60% =
39. 39.260 decreased by 15% =
40. 40.52 increased by 25% =

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