Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 386 · 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. 1.536 increased by 75% =
2. 2.100 decreased by 12% =
3. 3.405 increased by 20% =
4. 4.380 decreased by 10% =
5. 5.680 increased by 15% =
6. 6.360 decreased by 5% =
7. 7.315 increased by 20% =
8. 8.765 increased by 20% =
9. 9.304 decreased by 75% =
10. 10.756 decreased by 25% =
11. 11.390 increased by 10% =
12. 12.625 increased by 8% =
13. 13.390 decreased by 30% =
14. 14.105 increased by 20% =
15. 15.220 increased by 5% =
16. 16.148 decreased by 25% =
17. 17.140 increased by 35% =
18. 18.720 increased by 10% =
19. 19.575 decreased by 8% =
20. 20.540 decreased by 35% =
21. 21.300 increased by 20% =
22. 22.580 increased by 10% =
23. 23.270 increased by 30% =
24. 24.410 increased by 20% =
25. 25.760 increased by 5% =
26. 26.120 decreased by 35% =
27. 27.45 increased by 20% =
28. 28.500 decreased by 5% =
29. 29.545 increased by 40% =
30. 30.445 decreased by 40% =
31. 31.140 increased by 60% =
32. 32.540 increased by 30% =
33. 33.330 decreased by 30% =
34. 34.685 increased by 60% =
35. 35.240 increased by 15% =
36. 36.466 increased by 50% =
37. 37.380 increased by 20% =
38. 38.340 increased by 10% =
39. 39.380 decreased by 20% =
40. 40.310 decreased by 30% =

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