Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 893 · 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. 1.204 decreased by 75% =
2. 2.760 increased by 60% =
3. 3.255 increased by 20% =
4. 4.380 increased by 15% =
5. 5.56 increased by 25% =
6. 6.250 increased by 20% =
7. 7.620 increased by 25% =
8. 8.380 increased by 5% =
9. 9.500 increased by 5% =
10. 10.235 decreased by 40% =
11. 11.555 increased by 20% =
12. 12.750 increased by 12% =
13. 13.504 decreased by 75% =
14. 14.80 decreased by 20% =
15. 15.572 increased by 25% =
16. 16.208 increased by 75% =
17. 17.440 increased by 40% =
18. 18.540 increased by 35% =
19. 19.272 increased by 75% =
20. 20.350 decreased by 12% =
21. 21.710 increased by 30% =
22. 22.712 decreased by 25% =
23. 23.600 increased by 5% =
24. 24.495 increased by 20% =
25. 25.420 increased by 35% =
26. 26.80 decreased by 10% =
27. 27.710 decreased by 10% =
28. 28.150 increased by 10% =
29. 29.675 decreased by 8% =
30. 30.60 increased by 5% =
31. 31.96 increased by 75% =
32. 32.724 decreased by 25% =
33. 33.215 increased by 40% =
34. 34.645 increased by 40% =
35. 35.320 decreased by 10% =
36. 36.700 increased by 15% =
37. 37.596 decreased by 75% =
38. 38.240 increased by 60% =
39. 39.575 increased by 20% =
40. 40.325 increased by 8% =

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