Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 656 · 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. 1.325 decreased by 8% =
2. 2.300 increased by 5% =
3. 3.248 increased by 50% =
4. 4.230 increased by 40% =
5. 5.760 decreased by 5% =
6. 6.80 decreased by 10% =
7. 7.260 increased by 30% =
8. 8.385 increased by 20% =
9. 9.285 decreased by 40% =
10. 10.725 increased by 8% =
11. 11.156 increased by 75% =
12. 12.675 increased by 40% =
13. 13.385 decreased by 40% =
14. 14.100 increased by 5% =
15. 15.260 increased by 35% =
16. 16.800 decreased by 35% =
17. 17.260 decreased by 5% =
18. 18.100 decreased by 8% =
19. 19.360 decreased by 5% =
20. 20.145 increased by 20% =
21. 21.780 decreased by 5% =
22. 22.270 decreased by 30% =
23. 23.452 increased by 25% =
24. 24.265 decreased by 40% =
25. 25.704 increased by 25% =
26. 26.675 decreased by 12% =
27. 27.776 increased by 75% =
28. 28.370 increased by 60% =
29. 29.720 increased by 35% =
30. 30.175 increased by 60% =
31. 31.210 increased by 10% =
32. 32.100 decreased by 12% =
33. 33.80 decreased by 20% =
34. 34.720 decreased by 15% =
35. 35.120 decreased by 50% =
36. 36.395 decreased by 20% =
37. 37.325 decreased by 12% =
38. 38.100 increased by 8% =
39. 39.680 decreased by 5% =
40. 40.222 increased by 50% =

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