Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 650 · 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. 1.142 decreased by 50% =
2. 2.424 decreased by 25% =
3. 3.128 increased by 75% =
4. 4.760 increased by 15% =
5. 5.105 increased by 20% =
6. 6.740 increased by 75% =
7. 7.240 increased by 20% =
8. 8.140 increased by 15% =
9. 9.340 increased by 5% =
10. 10.400 increased by 35% =
11. 11.440 increased by 5% =
12. 12.650 increased by 8% =
13. 13.200 increased by 30% =
14. 14.440 increased by 5% =
15. 15.305 increased by 20% =
16. 16.552 decreased by 75% =
17. 17.225 decreased by 12% =
18. 18.225 decreased by 8% =
19. 19.455 decreased by 20% =
20. 20.160 increased by 5% =
21. 21.260 increased by 5% =
22. 22.180 decreased by 35% =
23. 23.420 decreased by 10% =
24. 24.196 increased by 75% =
25. 25.85 increased by 20% =
26. 26.584 increased by 50% =
27. 27.420 increased by 35% =
28. 28.520 increased by 40% =
29. 29.720 increased by 5% =
30. 30.620 increased by 5% =
31. 31.616 increased by 75% =
32. 32.176 decreased by 25% =
33. 33.792 increased by 75% =
34. 34.120 decreased by 20% =
35. 35.384 decreased by 75% =
36. 36.375 decreased by 20% =
37. 37.150 decreased by 12% =
38. 38.94 decreased by 50% =
39. 39.500 increased by 12% =
40. 40.725 decreased by 40% =

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