Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 345 · 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. 1.140 decreased by 15% =
2. 2.375 increased by 12% =
3. 3.120 decreased by 5% =
4. 4.720 increased by 30% =
5. 5.620 decreased by 30% =
6. 6.595 increased by 60% =
7. 7.230 decreased by 30% =
8. 8.270 increased by 10% =
9. 9.640 decreased by 60% =
10. 10.685 increased by 20% =
11. 11.155 increased by 60% =
12. 12.220 increased by 15% =
13. 13.200 decreased by 12% =
14. 14.672 increased by 25% =
15. 15.620 increased by 35% =
16. 16.770 increased by 40% =
17. 17.110 decreased by 40% =
18. 18.275 decreased by 60% =
19. 19.100 decreased by 20% =
20. 20.575 decreased by 8% =
21. 21.775 increased by 12% =
22. 22.490 increased by 10% =
23. 23.470 decreased by 50% =
24. 24.260 increased by 15% =
25. 25.320 increased by 15% =
26. 26.605 decreased by 60% =
27. 27.290 decreased by 10% =
28. 28.530 increased by 20% =
29. 29.75 decreased by 8% =
30. 30.120 decreased by 35% =
31. 31.200 increased by 40% =
32. 32.595 decreased by 20% =
33. 33.545 decreased by 40% =
34. 34.616 increased by 75% =
35. 35.98 decreased by 50% =
36. 36.140 increased by 35% =
37. 37.748 increased by 25% =
38. 38.200 decreased by 5% =
39. 39.80 increased by 15% =
40. 40.140 decreased by 10% =

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