Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 255 · 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. 1.265 decreased by 60% =
2. 2.580 increased by 40% =
3. 3.175 increased by 12% =
4. 4.345 decreased by 40% =
5. 5.180 increased by 5% =
6. 6.175 decreased by 8% =
7. 7.240 increased by 15% =
8. 8.550 increased by 40% =
9. 9.730 decreased by 20% =
10. 10.380 decreased by 15% =
11. 11.300 increased by 15% =
12. 12.440 decreased by 5% =
13. 13.580 increased by 35% =
14. 14.685 decreased by 20% =
15. 15.510 decreased by 30% =
16. 16.730 increased by 40% =
17. 17.675 increased by 40% =
18. 18.130 decreased by 30% =
19. 19.200 decreased by 10% =
20. 20.416 decreased by 75% =
21. 21.775 increased by 12% =
22. 22.212 decreased by 75% =
23. 23.236 increased by 75% =
24. 24.285 increased by 60% =
25. 25.64 increased by 25% =
26. 26.40 decreased by 5% =
27. 27.670 increased by 10% =
28. 28.620 increased by 15% =
29. 29.680 decreased by 35% =
30. 30.460 decreased by 15% =
31. 31.220 increased by 15% =
32. 32.405 increased by 20% =
33. 33.200 decreased by 8% =
34. 34.245 decreased by 20% =
35. 35.660 increased by 15% =
36. 36.150 decreased by 8% =
37. 37.725 decreased by 12% =
38. 38.500 decreased by 5% =
39. 39.250 increased by 12% =
40. 40.540 increased by 15% =

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