Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 633 · 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. 1.400 increased by 8% =
2. 2.84 increased by 50% =
3. 3.165 increased by 60% =
4. 4.400 increased by 15% =
5. 5.490 decreased by 30% =
6. 6.595 increased by 60% =
7. 7.765 increased by 20% =
8. 8.730 increased by 30% =
9. 9.400 decreased by 8% =
10. 10.250 decreased by 12% =
11. 11.440 decreased by 15% =
12. 12.355 decreased by 20% =
13. 13.125 decreased by 12% =
14. 14.580 decreased by 5% =
15. 15.100 decreased by 5% =
16. 16.665 decreased by 20% =
17. 17.400 increased by 30% =
18. 18.100 increased by 8% =
19. 19.96 increased by 75% =
20. 20.350 decreased by 12% =
21. 21.220 decreased by 15% =
22. 22.456 increased by 75% =
23. 23.604 decreased by 25% =
24. 24.708 increased by 50% =
25. 25.360 increased by 30% =
26. 26.725 decreased by 40% =
27. 27.175 decreased by 8% =
28. 28.370 decreased by 30% =
29. 29.266 decreased by 50% =
30. 30.256 increased by 25% =
31. 31.765 decreased by 60% =
32. 32.680 decreased by 35% =
33. 33.130 decreased by 10% =
34. 34.708 increased by 75% =
35. 35.560 decreased by 30% =
36. 36.344 increased by 75% =
37. 37.180 increased by 75% =
38. 38.410 decreased by 20% =
39. 39.375 increased by 12% =
40. 40.375 increased by 8% =

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