Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 580 · 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. 1.700 decreased by 15% =
2. 2.400 increased by 35% =
3. 3.655 increased by 60% =
4. 4.630 increased by 50% =
5. 5.456 decreased by 25% =
6. 6.625 increased by 60% =
7. 7.425 decreased by 8% =
8. 8.520 decreased by 5% =
9. 9.784 increased by 75% =
10. 10.40 increased by 30% =
11. 11.65 increased by 40% =
12. 12.100 increased by 30% =
13. 13.220 decreased by 25% =
14. 14.756 decreased by 25% =
15. 15.660 increased by 35% =
16. 16.516 decreased by 75% =
17. 17.525 increased by 8% =
18. 18.140 decreased by 75% =
19. 19.380 decreased by 25% =
20. 20.150 increased by 12% =
21. 21.350 increased by 8% =
22. 22.600 decreased by 12% =
23. 23.130 decreased by 40% =
24. 24.500 increased by 35% =
25. 25.240 increased by 35% =
26. 26.92 decreased by 75% =
27. 27.220 decreased by 5% =
28. 28.415 increased by 40% =
29. 29.270 increased by 10% =
30. 30.80 decreased by 30% =
31. 31.295 decreased by 40% =
32. 32.575 decreased by 8% =
33. 33.400 increased by 35% =
34. 34.515 decreased by 20% =
35. 35.725 increased by 12% =
36. 36.610 decreased by 10% =
37. 37.274 decreased by 50% =
38. 38.240 decreased by 15% =
39. 39.655 increased by 40% =
40. 40.420 increased by 15% =

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