Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 282 · 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. 1.715 decreased by 40% =
2. 2.725 increased by 12% =
3. 3.460 increased by 15% =
4. 4.400 increased by 12% =
5. 5.340 increased by 35% =
6. 6.65 decreased by 60% =
7. 7.440 increased by 5% =
8. 8.760 decreased by 15% =
9. 9.236 increased by 25% =
10. 10.260 increased by 5% =
11. 11.625 increased by 8% =
12. 12.440 decreased by 35% =
13. 13.676 decreased by 25% =
14. 14.290 decreased by 20% =
15. 15.365 decreased by 60% =
16. 16.50 decreased by 10% =
17. 17.768 decreased by 25% =
18. 18.728 decreased by 25% =
19. 19.428 increased by 25% =
20. 20.80 increased by 35% =
21. 21.200 increased by 5% =
22. 22.75 increased by 12% =
23. 23.564 increased by 25% =
24. 24.800 decreased by 5% =
25. 25.316 decreased by 75% =
26. 26.178 increased by 50% =
27. 27.200 increased by 8% =
28. 28.360 increased by 5% =
29. 29.255 decreased by 40% =
30. 30.425 increased by 12% =
31. 31.200 decreased by 35% =
32. 32.540 increased by 30% =
33. 33.765 decreased by 20% =
34. 34.272 decreased by 75% =
35. 35.610 increased by 50% =
36. 36.248 decreased by 75% =
37. 37.500 decreased by 30% =
38. 38.252 decreased by 25% =
39. 39.230 decreased by 60% =
40. 40.300 decreased by 75% =

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