Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 326 · 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. 1.190 decreased by 50% =
2. 2.100 decreased by 12% =
3. 3.750 increased by 12% =
4. 4.708 increased by 50% =
5. 5.350 increased by 8% =
6. 6.60 increased by 20% =
7. 7.585 increased by 40% =
8. 8.200 decreased by 40% =
9. 9.40 decreased by 35% =
10. 10.204 increased by 75% =
11. 11.780 increased by 15% =
12. 12.360 increased by 75% =
13. 13.644 decreased by 25% =
14. 14.360 increased by 30% =
15. 15.740 decreased by 15% =
16. 16.100 increased by 5% =
17. 17.305 increased by 40% =
18. 18.250 increased by 10% =
19. 19.792 increased by 25% =
20. 20.188 increased by 50% =
21. 21.160 increased by 15% =
22. 22.670 increased by 10% =
23. 23.780 increased by 10% =
24. 24.200 increased by 35% =
25. 25.80 decreased by 10% =
26. 26.440 increased by 40% =
27. 27.575 decreased by 8% =
28. 28.512 increased by 75% =
29. 29.360 decreased by 25% =
30. 30.320 decreased by 15% =
31. 31.800 increased by 12% =
32. 32.455 increased by 20% =
33. 33.460 decreased by 10% =
34. 34.705 decreased by 60% =
35. 35.750 decreased by 10% =
36. 36.630 decreased by 50% =
37. 37.510 decreased by 40% =
38. 38.510 increased by 10% =
39. 39.720 decreased by 15% =
40. 40.790 increased by 20% =

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