Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 920 · 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. 1.335 decreased by 20% =
2. 2.164 increased by 75% =
3. 3.168 decreased by 75% =
4. 4.140 decreased by 15% =
5. 5.440 decreased by 15% =
6. 6.420 increased by 25% =
7. 7.600 decreased by 12% =
8. 8.745 increased by 40% =
9. 9.320 increased by 60% =
10. 10.110 decreased by 10% =
11. 11.492 decreased by 50% =
12. 12.705 increased by 40% =
13. 13.445 decreased by 20% =
14. 14.800 decreased by 12% =
15. 15.40 increased by 5% =
16. 16.780 decreased by 5% =
17. 17.275 increased by 12% =
18. 18.540 decreased by 35% =
19. 19.640 increased by 15% =
20. 20.50 increased by 8% =
21. 21.122 decreased by 50% =
22. 22.40 increased by 35% =
23. 23.180 decreased by 30% =
24. 24.325 increased by 12% =
25. 25.455 increased by 60% =
26. 26.140 decreased by 35% =
27. 27.100 decreased by 12% =
28. 28.788 increased by 25% =
29. 29.375 decreased by 20% =
30. 30.360 decreased by 35% =
31. 31.280 increased by 35% =
32. 32.624 increased by 25% =
33. 33.380 decreased by 10% =
34. 34.395 increased by 60% =
35. 35.780 increased by 5% =
36. 36.320 increased by 20% =
37. 37.760 decreased by 20% =
38. 38.775 decreased by 12% =
39. 39.180 decreased by 5% =
40. 40.660 increased by 15% =

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