Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 769 · 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. 1.454 decreased by 50% =
2. 2.660 decreased by 75% =
3. 3.180 decreased by 15% =
4. 4.136 decreased by 25% =
5. 5.120 increased by 35% =
6. 6.228 decreased by 75% =
7. 7.565 increased by 20% =
8. 8.225 increased by 8% =
9. 9.125 increased by 8% =
10. 10.100 increased by 30% =
11. 11.760 decreased by 15% =
12. 12.785 increased by 60% =
13. 13.290 increased by 60% =
14. 14.250 decreased by 20% =
15. 15.52 increased by 25% =
16. 16.60 decreased by 15% =
17. 17.250 decreased by 60% =
18. 18.550 decreased by 12% =
19. 19.345 increased by 40% =
20. 20.420 decreased by 75% =
21. 21.150 decreased by 8% =
22. 22.460 increased by 35% =
23. 23.120 decreased by 10% =
24. 24.635 increased by 40% =
25. 25.100 decreased by 15% =
26. 26.160 increased by 30% =
27. 27.80 decreased by 60% =
28. 28.496 increased by 75% =
29. 29.425 increased by 8% =
30. 30.360 decreased by 15% =
31. 31.232 decreased by 25% =
32. 32.160 increased by 75% =
33. 33.220 increased by 35% =
34. 34.530 increased by 40% =
35. 35.300 increased by 8% =
36. 36.140 decreased by 5% =
37. 37.575 increased by 20% =
38. 38.340 decreased by 10% =
39. 39.636 increased by 75% =
40. 40.252 increased by 25% =

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