Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 798 · 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. 1.640 decreased by 35% =
2. 2.420 increased by 15% =
3. 3.530 increased by 40% =
4. 4.50 decreased by 12% =
5. 5.355 decreased by 60% =
6. 6.240 increased by 25% =
7. 7.510 increased by 40% =
8. 8.740 increased by 5% =
9. 9.480 increased by 10% =
10. 10.280 increased by 20% =
11. 11.740 increased by 35% =
12. 12.210 increased by 60% =
13. 13.225 increased by 8% =
14. 14.745 increased by 40% =
15. 15.780 increased by 20% =
16. 16.770 decreased by 20% =
17. 17.664 decreased by 75% =
18. 18.344 increased by 75% =
19. 19.570 decreased by 10% =
20. 20.600 decreased by 10% =
21. 21.410 decreased by 30% =
22. 22.160 increased by 35% =
23. 23.740 decreased by 15% =
24. 24.650 decreased by 60% =
25. 25.180 increased by 15% =
26. 26.750 increased by 12% =
27. 27.670 increased by 40% =
28. 28.440 increased by 15% =
29. 29.40 decreased by 25% =
30. 30.200 decreased by 5% =
31. 31.200 decreased by 5% =
32. 32.75 increased by 20% =
33. 33.150 increased by 20% =
34. 34.230 increased by 40% =
35. 35.800 decreased by 5% =
36. 36.440 decreased by 5% =
37. 37.100 increased by 5% =
38. 38.155 decreased by 20% =
39. 39.225 increased by 12% =
40. 40.436 increased by 75% =

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