Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 898 · 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. 1.780 increased by 10% =
2. 2.40 increased by 15% =
3. 3.624 decreased by 50% =
4. 4.260 increased by 5% =
5. 5.370 decreased by 40% =
6. 6.740 increased by 30% =
7. 7.226 increased by 50% =
8. 8.675 decreased by 8% =
9. 9.430 increased by 20% =
10. 10.520 decreased by 5% =
11. 11.360 increased by 10% =
12. 12.525 increased by 8% =
13. 13.145 increased by 20% =
14. 14.40 decreased by 5% =
15. 15.312 increased by 25% =
16. 16.120 decreased by 15% =
17. 17.90 decreased by 30% =
18. 18.375 increased by 12% =
19. 19.240 decreased by 30% =
20. 20.584 decreased by 75% =
21. 21.180 increased by 30% =
22. 22.80 increased by 15% =
23. 23.350 decreased by 10% =
24. 24.180 decreased by 10% =
25. 25.150 decreased by 30% =
26. 26.480 decreased by 10% =
27. 27.585 decreased by 20% =
28. 28.125 increased by 12% =
29. 29.225 increased by 12% =
30. 30.690 increased by 30% =
31. 31.280 decreased by 75% =
32. 32.320 increased by 15% =
33. 33.385 increased by 60% =
34. 34.640 increased by 5% =
35. 35.744 increased by 75% =
36. 36.510 increased by 10% =
37. 37.476 decreased by 50% =
38. 38.588 decreased by 25% =
39. 39.560 increased by 15% =
40. 40.790 increased by 30% =

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