Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 275 · 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. 1.728 increased by 25% =
2. 2.400 increased by 5% =
3. 3.500 decreased by 20% =
4. 4.260 increased by 5% =
5. 5.56 increased by 50% =
6. 6.140 increased by 5% =
7. 7.320 decreased by 15% =
8. 8.700 decreased by 10% =
9. 9.748 decreased by 25% =
10. 10.160 decreased by 60% =
11. 11.440 decreased by 5% =
12. 12.375 decreased by 60% =
13. 13.510 decreased by 40% =
14. 14.190 increased by 10% =
15. 15.580 increased by 10% =
16. 16.370 increased by 20% =
17. 17.440 increased by 15% =
18. 18.440 increased by 30% =
19. 19.48 increased by 50% =
20. 20.210 increased by 30% =
21. 21.40 increased by 35% =
22. 22.115 increased by 20% =
23. 23.450 decreased by 20% =
24. 24.734 increased by 50% =
25. 25.800 decreased by 12% =
26. 26.800 decreased by 15% =
27. 27.50 decreased by 12% =
28. 28.560 decreased by 75% =
29. 29.320 decreased by 50% =
30. 30.580 increased by 15% =
31. 31.140 decreased by 15% =
32. 32.100 decreased by 35% =
33. 33.575 increased by 12% =
34. 34.130 increased by 30% =
35. 35.240 decreased by 15% =
36. 36.460 increased by 15% =
37. 37.360 increased by 15% =
38. 38.230 increased by 10% =
39. 39.550 increased by 12% =
40. 40.40 increased by 15% =

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