Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 537 · 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. 1.720 increased by 5% =
2. 2.320 decreased by 5% =
3. 3.778 increased by 50% =
4. 4.540 increased by 10% =
5. 5.420 decreased by 15% =
6. 6.60 decreased by 35% =
7. 7.150 increased by 12% =
8. 8.540 increased by 35% =
9. 9.350 increased by 10% =
10. 10.135 decreased by 20% =
11. 11.205 decreased by 40% =
12. 12.438 increased by 50% =
13. 13.540 decreased by 10% =
14. 14.150 decreased by 8% =
15. 15.492 decreased by 25% =
16. 16.130 increased by 10% =
17. 17.460 increased by 35% =
18. 18.530 increased by 10% =
19. 19.260 increased by 15% =
20. 20.360 decreased by 35% =
21. 21.144 decreased by 75% =
22. 22.390 decreased by 10% =
23. 23.715 increased by 60% =
24. 24.200 increased by 15% =
25. 25.660 decreased by 10% =
26. 26.110 decreased by 20% =
27. 27.540 decreased by 20% =
28. 28.160 increased by 75% =
29. 29.728 increased by 25% =
30. 30.495 increased by 20% =
31. 31.160 increased by 35% =
32. 32.665 increased by 60% =
33. 33.625 decreased by 12% =
34. 34.356 increased by 50% =
35. 35.740 increased by 20% =
36. 36.380 decreased by 20% =
37. 37.724 decreased by 75% =
38. 38.405 decreased by 20% =
39. 39.100 increased by 8% =
40. 40.310 decreased by 50% =

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