Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 789 · 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. 1.710 decreased by 20% =
2. 2.140 increased by 35% =
3. 3.100 decreased by 12% =
4. 4.640 decreased by 20% =
5. 5.216 decreased by 25% =
6. 6.180 increased by 30% =
7. 7.150 increased by 12% =
8. 8.775 decreased by 12% =
9. 9.410 decreased by 10% =
10. 10.388 increased by 75% =
11. 11.440 increased by 35% =
12. 12.175 increased by 8% =
13. 13.100 decreased by 5% =
14. 14.100 increased by 5% =
15. 15.680 increased by 10% =
16. 16.740 increased by 5% =
17. 17.160 decreased by 30% =
18. 18.560 decreased by 5% =
19. 19.244 decreased by 75% =
20. 20.456 decreased by 75% =
21. 21.108 increased by 50% =
22. 22.100 increased by 15% =
23. 23.40 increased by 15% =
24. 24.132 decreased by 25% =
25. 25.710 decreased by 10% =
26. 26.100 increased by 15% =
27. 27.620 decreased by 35% =
28. 28.130 decreased by 10% =
29. 29.175 decreased by 8% =
30. 30.680 decreased by 5% =
31. 31.360 increased by 35% =
32. 32.525 increased by 12% =
33. 33.680 decreased by 30% =
34. 34.354 decreased by 50% =
35. 35.230 decreased by 30% =
36. 36.100 increased by 60% =
37. 37.544 decreased by 75% =
38. 38.728 increased by 75% =
39. 39.284 decreased by 75% =
40. 40.660 decreased by 5% =

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