Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 25 · 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. 1.184 increased by 25% =
2. 2.670 decreased by 30% =
3. 3.400 decreased by 8% =
4. 4.775 decreased by 20% =
5. 5.205 decreased by 20% =
6. 6.140 increased by 35% =
7. 7.450 increased by 30% =
8. 8.250 decreased by 10% =
9. 9.175 increased by 12% =
10. 10.55 increased by 40% =
11. 11.720 increased by 15% =
12. 12.560 increased by 15% =
13. 13.700 increased by 5% =
14. 14.272 decreased by 75% =
15. 15.245 increased by 60% =
16. 16.455 decreased by 20% =
17. 17.580 increased by 10% =
18. 18.510 decreased by 60% =
19. 19.510 decreased by 20% =
20. 20.40 increased by 10% =
21. 21.450 decreased by 8% =
22. 22.275 increased by 40% =
23. 23.575 decreased by 12% =
24. 24.70 increased by 30% =
25. 25.60 increased by 5% =
26. 26.200 increased by 15% =
27. 27.705 decreased by 40% =
28. 28.775 increased by 12% =
29. 29.228 increased by 50% =
30. 30.790 increased by 30% =
31. 31.720 increased by 15% =
32. 32.338 decreased by 50% =
33. 33.790 increased by 10% =
34. 34.280 decreased by 60% =
35. 35.630 increased by 60% =
36. 36.400 decreased by 5% =
37. 37.80 increased by 15% =
38. 38.60 increased by 60% =
39. 39.720 increased by 5% =
40. 40.750 decreased by 12% =

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