Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 883 · 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. 1.660 decreased by 15% =
2. 2.612 decreased by 25% =
3. 3.730 decreased by 60% =
4. 4.296 decreased by 25% =
5. 5.245 decreased by 20% =
6. 6.415 decreased by 20% =
7. 7.624 decreased by 75% =
8. 8.520 decreased by 15% =
9. 9.110 decreased by 20% =
10. 10.415 decreased by 60% =
11. 11.700 increased by 12% =
12. 12.580 increased by 35% =
13. 13.720 increased by 10% =
14. 14.590 increased by 10% =
15. 15.730 decreased by 60% =
16. 16.85 increased by 20% =
17. 17.500 decreased by 25% =
18. 18.800 increased by 15% =
19. 19.240 increased by 15% =
20. 20.225 increased by 12% =
21. 21.325 decreased by 8% =
22. 22.768 increased by 75% =
23. 23.110 decreased by 40% =
24. 24.90 increased by 10% =
25. 25.650 decreased by 30% =
26. 26.70 increased by 10% =
27. 27.625 decreased by 8% =
28. 28.308 increased by 25% =
29. 29.155 increased by 60% =
30. 30.44 increased by 75% =
31. 31.170 increased by 60% =
32. 32.775 increased by 12% =
33. 33.260 decreased by 35% =
34. 34.800 increased by 35% =
35. 35.728 increased by 50% =
36. 36.788 increased by 25% =
37. 37.210 decreased by 20% =
38. 38.752 decreased by 50% =
39. 39.340 increased by 15% =
40. 40.410 increased by 30% =

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