Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 229 · 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. 1.80 decreased by 15% =
2. 2.40 increased by 15% =
3. 3.450 decreased by 30% =
4. 4.175 decreased by 40% =
5. 5.570 increased by 10% =
6. 6.500 decreased by 5% =
7. 7.404 increased by 25% =
8. 8.500 decreased by 5% =
9. 9.140 increased by 35% =
10. 10.610 decreased by 10% =
11. 11.750 increased by 8% =
12. 12.680 decreased by 35% =
13. 13.520 increased by 35% =
14. 14.130 decreased by 60% =
15. 15.500 decreased by 15% =
16. 16.570 decreased by 40% =
17. 17.210 increased by 30% =
18. 18.148 increased by 75% =
19. 19.375 increased by 12% =
20. 20.520 decreased by 60% =
21. 21.735 decreased by 20% =
22. 22.680 decreased by 25% =
23. 23.100 increased by 60% =
24. 24.65 increased by 60% =
25. 25.80 decreased by 5% =
26. 26.465 increased by 20% =
27. 27.630 increased by 30% =
28. 28.270 increased by 10% =
29. 29.235 increased by 20% =
30. 30.585 decreased by 60% =
31. 31.260 decreased by 10% =
32. 32.600 increased by 35% =
33. 33.300 increased by 8% =
34. 34.200 increased by 10% =
35. 35.720 increased by 5% =
36. 36.650 decreased by 8% =
37. 37.630 increased by 40% =
38. 38.275 decreased by 8% =
39. 39.325 decreased by 8% =
40. 40.425 decreased by 12% =

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