Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 547 · 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. 1.272 increased by 75% =
2. 2.220 increased by 15% =
3. 3.200 increased by 12% =
4. 4.148 increased by 75% =
5. 5.700 decreased by 5% =
6. 6.615 decreased by 60% =
7. 7.244 increased by 25% =
8. 8.160 increased by 5% =
9. 9.800 increased by 5% =
10. 10.728 decreased by 25% =
11. 11.160 increased by 15% =
12. 12.610 increased by 30% =
13. 13.665 increased by 60% =
14. 14.185 decreased by 60% =
15. 15.360 increased by 10% =
16. 16.235 increased by 20% =
17. 17.750 increased by 12% =
18. 18.720 increased by 15% =
19. 19.68 decreased by 50% =
20. 20.690 decreased by 10% =
21. 21.120 decreased by 10% =
22. 22.685 decreased by 20% =
23. 23.560 decreased by 35% =
24. 24.800 decreased by 50% =
25. 25.680 decreased by 35% =
26. 26.330 increased by 60% =
27. 27.640 increased by 40% =
28. 28.575 decreased by 8% =
29. 29.580 increased by 60% =
30. 30.760 decreased by 5% =
31. 31.760 decreased by 25% =
32. 32.85 increased by 20% =
33. 33.150 increased by 12% =
34. 34.160 increased by 35% =
35. 35.480 decreased by 35% =
36. 36.312 increased by 25% =
37. 37.350 increased by 30% =
38. 38.265 increased by 60% =
39. 39.384 decreased by 25% =
40. 40.684 increased by 50% =

Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths