Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 626 · 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. 1.350 decreased by 40% =
2. 2.360 decreased by 5% =
3. 3.435 increased by 20% =
4. 4.140 increased by 15% =
5. 5.45 increased by 20% =
6. 6.196 decreased by 25% =
7. 7.660 decreased by 40% =
8. 8.265 increased by 20% =
9. 9.620 decreased by 15% =
10. 10.560 decreased by 30% =
11. 11.590 decreased by 30% =
12. 12.480 increased by 15% =
13. 13.60 decreased by 15% =
14. 14.550 decreased by 8% =
15. 15.520 decreased by 15% =
16. 16.585 decreased by 60% =
17. 17.240 decreased by 30% =
18. 18.150 increased by 20% =
19. 19.135 decreased by 60% =
20. 20.640 decreased by 30% =
21. 21.150 increased by 10% =
22. 22.760 decreased by 20% =
23. 23.750 decreased by 20% =
24. 24.125 decreased by 8% =
25. 25.225 decreased by 12% =
26. 26.40 decreased by 10% =
27. 27.750 increased by 30% =
28. 28.150 increased by 12% =
29. 29.275 decreased by 40% =
30. 30.190 increased by 30% =
31. 31.250 decreased by 30% =
32. 32.690 increased by 40% =
33. 33.108 increased by 25% =
34. 34.370 increased by 30% =
35. 35.680 decreased by 35% =
36. 36.300 increased by 35% =
37. 37.180 increased by 15% =
38. 38.520 increased by 15% =
39. 39.80 increased by 5% =
40. 40.272 increased by 25% =

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