Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 107 · 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. 1.160 increased by 35% =
2. 2.582 decreased by 50% =
3. 3.425 increased by 8% =
4. 4.275 decreased by 12% =
5. 5.280 increased by 15% =
6. 6.198 increased by 50% =
7. 7.200 decreased by 12% =
8. 8.300 decreased by 30% =
9. 9.490 decreased by 20% =
10. 10.720 increased by 35% =
11. 11.575 increased by 8% =
12. 12.420 increased by 75% =
13. 13.760 increased by 20% =
14. 14.760 increased by 5% =
15. 15.740 increased by 15% =
16. 16.40 increased by 15% =
17. 17.620 increased by 10% =
18. 18.360 increased by 5% =
19. 19.85 increased by 40% =
20. 20.140 increased by 10% =
21. 21.235 increased by 60% =
22. 22.420 decreased by 35% =
23. 23.380 decreased by 5% =
24. 24.415 increased by 60% =
25. 25.460 increased by 5% =
26. 26.145 increased by 20% =
27. 27.280 decreased by 15% =
28. 28.270 increased by 30% =
29. 29.404 increased by 75% =
30. 30.150 increased by 20% =
31. 31.480 increased by 15% =
32. 32.155 increased by 60% =
33. 33.100 decreased by 8% =
34. 34.520 decreased by 35% =
35. 35.260 increased by 75% =
36. 36.50 increased by 30% =
37. 37.690 decreased by 40% =
38. 38.460 increased by 60% =
39. 39.260 increased by 5% =
40. 40.44 decreased by 75% =

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