Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 103 · 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. 1.230 increased by 30% =
2. 2.680 increased by 35% =
3. 3.492 increased by 25% =
4. 4.460 decreased by 25% =
5. 5.560 increased by 20% =
6. 6.260 decreased by 5% =
7. 7.75 decreased by 8% =
8. 8.610 increased by 30% =
9. 9.520 decreased by 15% =
10. 10.325 increased by 12% =
11. 11.260 increased by 35% =
12. 12.120 increased by 30% =
13. 13.350 decreased by 10% =
14. 14.85 decreased by 60% =
15. 15.340 decreased by 35% =
16. 16.245 decreased by 20% =
17. 17.800 increased by 8% =
18. 18.320 increased by 35% =
19. 19.600 increased by 12% =
20. 20.370 increased by 20% =
21. 21.520 decreased by 15% =
22. 22.632 decreased by 75% =
23. 23.550 increased by 10% =
24. 24.202 decreased by 50% =
25. 25.440 decreased by 10% =
26. 26.192 decreased by 25% =
27. 27.224 increased by 25% =
28. 28.548 increased by 25% =
29. 29.750 increased by 8% =
30. 30.324 increased by 75% =
31. 31.50 decreased by 20% =
32. 32.700 decreased by 15% =
33. 33.150 increased by 8% =
34. 34.748 increased by 25% =
35. 35.320 increased by 5% =
36. 36.250 decreased by 12% =
37. 37.730 increased by 30% =
38. 38.632 increased by 25% =
39. 39.475 increased by 20% =
40. 40.800 decreased by 10% =

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