Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 871 · 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. 1.470 decreased by 20% =
2. 2.640 increased by 20% =
3. 3.196 decreased by 25% =
4. 4.120 increased by 10% =
5. 5.400 increased by 5% =
6. 6.300 decreased by 12% =
7. 7.224 increased by 25% =
8. 8.140 increased by 10% =
9. 9.516 increased by 25% =
10. 10.160 decreased by 30% =
11. 11.760 increased by 75% =
12. 12.720 decreased by 35% =
13. 13.175 decreased by 8% =
14. 14.485 increased by 40% =
15. 15.275 increased by 8% =
16. 16.155 decreased by 20% =
17. 17.700 decreased by 5% =
18. 18.735 decreased by 60% =
19. 19.40 decreased by 50% =
20. 20.540 decreased by 60% =
21. 21.320 increased by 40% =
22. 22.170 increased by 50% =
23. 23.600 increased by 30% =
24. 24.375 decreased by 12% =
25. 25.600 decreased by 12% =
26. 26.100 increased by 8% =
27. 27.750 increased by 20% =
28. 28.600 decreased by 10% =
29. 29.240 decreased by 35% =
30. 30.380 increased by 5% =
31. 31.720 increased by 5% =
32. 32.724 decreased by 25% =
33. 33.75 decreased by 20% =
34. 34.260 increased by 10% =
35. 35.500 decreased by 75% =
36. 36.580 decreased by 60% =
37. 37.80 increased by 30% =
38. 38.352 decreased by 25% =
39. 39.80 increased by 15% =
40. 40.312 decreased by 75% =

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