Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 932 · 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 35% =
2. 2.315 decreased by 60% =
3. 3.550 decreased by 10% =
4. 4.196 decreased by 25% =
5. 5.505 increased by 20% =
6. 6.326 increased by 50% =
7. 7.124 increased by 75% =
8. 8.640 increased by 15% =
9. 9.240 decreased by 20% =
10. 10.135 increased by 20% =
11. 11.750 decreased by 8% =
12. 12.580 decreased by 40% =
13. 13.575 decreased by 12% =
14. 14.190 decreased by 40% =
15. 15.145 increased by 20% =
16. 16.340 decreased by 30% =
17. 17.550 decreased by 12% =
18. 18.492 decreased by 25% =
19. 19.760 increased by 5% =
20. 20.50 increased by 30% =
21. 21.320 increased by 15% =
22. 22.260 decreased by 35% =
23. 23.460 increased by 75% =
24. 24.550 decreased by 8% =
25. 25.465 increased by 20% =
26. 26.322 decreased by 50% =
27. 27.230 decreased by 40% =
28. 28.360 decreased by 75% =
29. 29.110 decreased by 20% =
30. 30.656 increased by 75% =
31. 31.265 increased by 60% =
32. 32.380 increased by 35% =
33. 33.158 increased by 50% =
34. 34.360 increased by 5% =
35. 35.200 decreased by 10% =
36. 36.330 increased by 40% =
37. 37.45 decreased by 40% =
38. 38.665 increased by 60% =
39. 39.360 increased by 35% =
40. 40.150 increased by 12% =

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