Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 595 · 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. 1.200 decreased by 12% =
2. 2.560 increased by 15% =
3. 3.270 increased by 30% =
4. 4.492 increased by 50% =
5. 5.430 increased by 10% =
6. 6.500 decreased by 5% =
7. 7.50 decreased by 8% =
8. 8.776 decreased by 25% =
9. 9.280 decreased by 60% =
10. 10.710 increased by 10% =
11. 11.300 decreased by 8% =
12. 12.340 decreased by 35% =
13. 13.420 increased by 15% =
14. 14.200 decreased by 10% =
15. 15.540 increased by 15% =
16. 16.140 decreased by 60% =
17. 17.400 increased by 35% =
18. 18.660 increased by 5% =
19. 19.575 increased by 8% =
20. 20.625 increased by 12% =
21. 21.480 decreased by 30% =
22. 22.640 decreased by 10% =
23. 23.800 decreased by 8% =
24. 24.620 increased by 20% =
25. 25.510 increased by 30% =
26. 26.780 increased by 75% =
27. 27.640 increased by 5% =
28. 28.595 increased by 20% =
29. 29.680 decreased by 30% =
30. 30.395 decreased by 20% =
31. 31.460 increased by 15% =
32. 32.590 increased by 10% =
33. 33.380 increased by 10% =
34. 34.660 increased by 40% =
35. 35.455 increased by 40% =
36. 36.545 increased by 40% =
37. 37.260 increased by 10% =
38. 38.125 increased by 8% =
39. 39.690 increased by 30% =
40. 40.440 increased by 10% =

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