Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 186 · 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. 1.555 decreased by 60% =
2. 2.620 increased by 15% =
3. 3.120 increased by 5% =
4. 4.80 increased by 5% =
5. 5.172 decreased by 25% =
6. 6.315 increased by 40% =
7. 7.320 decreased by 10% =
8. 8.468 increased by 25% =
9. 9.325 decreased by 12% =
10. 10.60 decreased by 15% =
11. 11.700 increased by 15% =
12. 12.60 decreased by 15% =
13. 13.125 decreased by 8% =
14. 14.600 increased by 15% =
15. 15.370 decreased by 30% =
16. 16.600 increased by 35% =
17. 17.140 increased by 35% =
18. 18.190 decreased by 50% =
19. 19.160 decreased by 35% =
20. 20.526 increased by 50% =
21. 21.420 increased by 35% =
22. 22.480 decreased by 15% =
23. 23.175 increased by 60% =
24. 24.200 increased by 15% =
25. 25.140 decreased by 10% =
26. 26.150 increased by 30% =
27. 27.100 increased by 5% =
28. 28.96 decreased by 25% =
29. 29.470 decreased by 50% =
30. 30.700 decreased by 5% =
31. 31.260 decreased by 10% =
32. 32.400 decreased by 75% =
33. 33.200 decreased by 12% =
34. 34.600 decreased by 15% =
35. 35.375 increased by 12% =
36. 36.505 decreased by 60% =
37. 37.750 increased by 20% =
38. 38.600 increased by 8% =
39. 39.100 increased by 12% =
40. 40.635 decreased by 60% =

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