Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 843 · 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. 1.420 increased by 15% =
2. 2.190 decreased by 10% =
3. 3.380 increased by 5% =
4. 4.276 decreased by 25% =
5. 5.555 increased by 20% =
6. 6.400 increased by 30% =
7. 7.670 increased by 60% =
8. 8.570 increased by 30% =
9. 9.128 decreased by 75% =
10. 10.295 increased by 20% =
11. 11.95 decreased by 20% =
12. 12.540 increased by 10% =
13. 13.308 increased by 50% =
14. 14.660 increased by 75% =
15. 15.340 increased by 5% =
16. 16.140 increased by 5% =
17. 17.550 increased by 10% =
18. 18.600 increased by 35% =
19. 19.520 decreased by 5% =
20. 20.150 increased by 10% =
21. 21.224 increased by 25% =
22. 22.330 increased by 20% =
23. 23.172 increased by 75% =
24. 24.290 increased by 60% =
25. 25.280 decreased by 60% =
26. 26.640 increased by 20% =
27. 27.775 increased by 60% =
28. 28.560 increased by 10% =
29. 29.560 increased by 75% =
30. 30.575 increased by 8% =
31. 31.725 increased by 12% =
32. 32.760 increased by 15% =
33. 33.675 increased by 12% =
34. 34.170 decreased by 10% =
35. 35.480 increased by 15% =
36. 36.440 increased by 5% =
37. 37.700 decreased by 8% =
38. 38.700 increased by 15% =
39. 39.640 decreased by 5% =
40. 40.680 increased by 5% =

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