Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 66 · 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. 1.520 increased by 15% =
2. 2.712 decreased by 25% =
3. 3.432 decreased by 75% =
4. 4.145 increased by 60% =
5. 5.680 increased by 30% =
6. 6.400 decreased by 8% =
7. 7.156 increased by 25% =
8. 8.115 increased by 40% =
9. 9.125 increased by 8% =
10. 10.175 decreased by 12% =
11. 11.674 increased by 50% =
12. 12.140 decreased by 25% =
13. 13.750 decreased by 30% =
14. 14.240 decreased by 35% =
15. 15.420 decreased by 5% =
16. 16.560 increased by 10% =
17. 17.85 increased by 20% =
18. 18.240 increased by 35% =
19. 19.120 increased by 5% =
20. 20.332 increased by 25% =
21. 21.125 decreased by 8% =
22. 22.125 increased by 8% =
23. 23.620 decreased by 20% =
24. 24.280 decreased by 5% =
25. 25.82 increased by 50% =
26. 26.800 increased by 8% =
27. 27.255 increased by 20% =
28. 28.610 decreased by 30% =
29. 29.645 increased by 60% =
30. 30.100 increased by 8% =
31. 31.410 increased by 30% =
32. 32.296 increased by 50% =
33. 33.480 decreased by 10% =
34. 34.538 decreased by 50% =
35. 35.430 increased by 10% =
36. 36.260 increased by 15% =
37. 37.180 increased by 60% =
38. 38.260 increased by 5% =
39. 39.550 decreased by 20% =
40. 40.540 increased by 5% =

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