Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 471 · 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. 1.340 decreased by 40% =
2. 2.235 increased by 20% =
3. 3.575 decreased by 40% =
4. 4.540 increased by 30% =
5. 5.780 decreased by 5% =
6. 6.528 increased by 75% =
7. 7.415 decreased by 20% =
8. 8.486 increased by 50% =
9. 9.375 increased by 8% =
10. 10.594 decreased by 50% =
11. 11.530 increased by 40% =
12. 12.615 increased by 60% =
13. 13.700 decreased by 10% =
14. 14.220 increased by 10% =
15. 15.530 decreased by 40% =
16. 16.450 decreased by 60% =
17. 17.390 increased by 60% =
18. 18.375 decreased by 12% =
19. 19.130 decreased by 20% =
20. 20.65 increased by 40% =
21. 21.240 increased by 30% =
22. 22.560 increased by 35% =
23. 23.750 decreased by 10% =
24. 24.520 increased by 10% =
25. 25.600 increased by 35% =
26. 26.655 decreased by 40% =
27. 27.775 decreased by 60% =
28. 28.440 decreased by 15% =
29. 29.624 increased by 25% =
30. 30.760 decreased by 5% =
31. 31.700 increased by 35% =
32. 32.448 increased by 25% =
33. 33.440 decreased by 15% =
34. 34.350 decreased by 8% =
35. 35.100 increased by 5% =
36. 36.450 increased by 8% =
37. 37.560 increased by 5% =
38. 38.128 decreased by 50% =
39. 39.710 increased by 10% =
40. 40.72 decreased by 50% =

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