Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 607 · 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. 1.116 decreased by 50% =
2. 2.770 decreased by 30% =
3. 3.800 increased by 12% =
4. 4.780 increased by 35% =
5. 5.480 decreased by 15% =
6. 6.460 decreased by 5% =
7. 7.656 increased by 25% =
8. 8.280 increased by 35% =
9. 9.300 decreased by 12% =
10. 10.325 increased by 12% =
11. 11.490 increased by 50% =
12. 12.600 increased by 50% =
13. 13.375 decreased by 60% =
14. 14.575 increased by 8% =
15. 15.325 increased by 8% =
16. 16.440 decreased by 15% =
17. 17.615 increased by 20% =
18. 18.400 increased by 15% =
19. 19.575 decreased by 20% =
20. 20.675 increased by 8% =
21. 21.220 increased by 5% =
22. 22.700 decreased by 8% =
23. 23.204 decreased by 25% =
24. 24.370 increased by 40% =
25. 25.664 increased by 25% =
26. 26.450 increased by 10% =
27. 27.176 increased by 25% =
28. 28.600 increased by 30% =
29. 29.40 decreased by 15% =
30. 30.720 decreased by 35% =
31. 31.715 decreased by 60% =
32. 32.608 decreased by 50% =
33. 33.420 increased by 35% =
34. 34.725 increased by 8% =
35. 35.408 decreased by 25% =
36. 36.160 increased by 60% =
37. 37.200 increased by 8% =
38. 38.420 decreased by 60% =
39. 39.260 increased by 30% =
40. 40.572 decreased by 75% =

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