Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 869 · 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. 1.400 increased by 5% =
2. 2.624 decreased by 75% =
3. 3.460 increased by 35% =
4. 4.120 increased by 30% =
5. 5.625 decreased by 8% =
6. 6.480 increased by 30% =
7. 7.256 decreased by 75% =
8. 8.40 increased by 25% =
9. 9.125 increased by 8% =
10. 10.740 increased by 20% =
11. 11.530 decreased by 10% =
12. 12.770 increased by 20% =
13. 13.200 decreased by 12% =
14. 14.495 decreased by 40% =
15. 15.520 increased by 30% =
16. 16.350 decreased by 8% =
17. 17.775 increased by 12% =
18. 18.724 increased by 75% =
19. 19.105 decreased by 20% =
20. 20.525 decreased by 12% =
21. 21.680 increased by 60% =
22. 22.240 decreased by 35% =
23. 23.164 decreased by 75% =
24. 24.292 increased by 25% =
25. 25.480 increased by 30% =
26. 26.420 increased by 35% =
27. 27.80 increased by 50% =
28. 28.800 decreased by 12% =
29. 29.225 increased by 20% =
30. 30.250 increased by 12% =
31. 31.175 decreased by 12% =
32. 32.770 increased by 10% =
33. 33.720 decreased by 15% =
34. 34.180 decreased by 75% =
35. 35.600 increased by 12% =
36. 36.290 decreased by 10% =
37. 37.120 increased by 10% =
38. 38.205 increased by 20% =
39. 39.700 decreased by 12% =
40. 40.140 increased by 15% =

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