Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 457 · 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. 1.200 decreased by 12% =
2. 2.468 decreased by 75% =
3. 3.180 increased by 35% =
4. 4.75 increased by 8% =
5. 5.625 increased by 40% =
6. 6.764 increased by 75% =
7. 7.65 increased by 20% =
8. 8.720 decreased by 35% =
9. 9.95 increased by 40% =
10. 10.550 increased by 10% =
11. 11.420 increased by 30% =
12. 12.775 increased by 60% =
13. 13.490 decreased by 30% =
14. 14.520 increased by 15% =
15. 15.335 increased by 40% =
16. 16.372 increased by 50% =
17. 17.50 increased by 40% =
18. 18.360 increased by 35% =
19. 19.76 decreased by 25% =
20. 20.48 increased by 25% =
21. 21.350 decreased by 30% =
22. 22.522 decreased by 50% =
23. 23.440 decreased by 5% =
24. 24.670 increased by 30% =
25. 25.625 increased by 12% =
26. 26.640 decreased by 5% =
27. 27.375 increased by 8% =
28. 28.616 increased by 50% =
29. 29.210 increased by 40% =
30. 30.435 decreased by 60% =
31. 31.275 increased by 12% =
32. 32.775 increased by 8% =
33. 33.48 decreased by 25% =
34. 34.360 decreased by 30% =
35. 35.85 decreased by 60% =
36. 36.225 decreased by 40% =
37. 37.235 decreased by 40% =
38. 38.60 increased by 75% =
39. 39.280 increased by 75% =
40. 40.420 increased by 35% =

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