Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 20 · 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. 1.560 increased by 35% =
2. 2.610 increased by 60% =
3. 3.665 increased by 40% =
4. 4.125 decreased by 8% =
5. 5.770 decreased by 20% =
6. 6.740 increased by 35% =
7. 7.455 increased by 40% =
8. 8.460 decreased by 75% =
9. 9.315 increased by 20% =
10. 10.300 increased by 75% =
11. 11.320 increased by 30% =
12. 12.80 increased by 5% =
13. 13.360 increased by 20% =
14. 14.150 decreased by 8% =
15. 15.300 increased by 35% =
16. 16.340 decreased by 30% =
17. 17.515 decreased by 20% =
18. 18.550 increased by 12% =
19. 19.160 increased by 10% =
20. 20.280 increased by 5% =
21. 21.575 decreased by 8% =
22. 22.350 decreased by 60% =
23. 23.180 decreased by 15% =
24. 24.640 increased by 10% =
25. 25.95 decreased by 40% =
26. 26.350 decreased by 10% =
27. 27.205 increased by 40% =
28. 28.440 increased by 10% =
29. 29.210 decreased by 10% =
30. 30.490 increased by 10% =
31. 31.100 decreased by 35% =
32. 32.400 decreased by 12% =
33. 33.500 decreased by 8% =
34. 34.124 increased by 25% =
35. 35.45 increased by 60% =
36. 36.690 increased by 60% =
37. 37.190 decreased by 20% =
38. 38.520 decreased by 60% =
39. 39.140 increased by 5% =
40. 40.280 increased by 75% =

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