Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 361 · 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. 1.60 decreased by 15% =
2. 2.425 decreased by 60% =
3. 3.560 decreased by 15% =
4. 4.560 decreased by 75% =
5. 5.570 increased by 60% =
6. 6.225 increased by 12% =
7. 7.425 decreased by 12% =
8. 8.635 decreased by 40% =
9. 9.640 increased by 10% =
10. 10.120 increased by 5% =
11. 11.312 increased by 25% =
12. 12.116 increased by 75% =
13. 13.75 increased by 60% =
14. 14.125 increased by 8% =
15. 15.220 decreased by 15% =
16. 16.60 decreased by 35% =
17. 17.485 decreased by 40% =
18. 18.760 increased by 35% =
19. 19.368 decreased by 75% =
20. 20.392 increased by 25% =
21. 21.800 decreased by 25% =
22. 22.790 increased by 60% =
23. 23.220 decreased by 30% =
24. 24.250 decreased by 12% =
25. 25.120 decreased by 5% =
26. 26.352 decreased by 25% =
27. 27.212 increased by 25% =
28. 28.140 decreased by 20% =
29. 29.90 increased by 40% =
30. 30.120 increased by 15% =
31. 31.475 increased by 8% =
32. 32.404 increased by 25% =
33. 33.460 increased by 5% =
34. 34.200 increased by 25% =
35. 35.478 decreased by 50% =
36. 36.760 decreased by 60% =
37. 37.390 decreased by 30% =
38. 38.480 increased by 15% =
39. 39.412 increased by 50% =
40. 40.344 increased by 75% =

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