Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 318 · 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. 1.725 decreased by 8% =
2. 2.52 increased by 75% =
3. 3.380 increased by 20% =
4. 4.800 decreased by 15% =
5. 5.60 decreased by 35% =
6. 6.540 increased by 40% =
7. 7.160 decreased by 35% =
8. 8.40 increased by 25% =
9. 9.250 decreased by 30% =
10. 10.660 decreased by 30% =
11. 11.120 decreased by 5% =
12. 12.436 decreased by 25% =
13. 13.548 decreased by 75% =
14. 14.270 increased by 40% =
15. 15.100 increased by 40% =
16. 16.768 increased by 25% =
17. 17.500 decreased by 8% =
18. 18.450 increased by 8% =
19. 19.575 increased by 8% =
20. 20.160 decreased by 15% =
21. 21.380 decreased by 10% =
22. 22.422 decreased by 50% =
23. 23.750 increased by 40% =
24. 24.264 decreased by 25% =
25. 25.120 decreased by 15% =
26. 26.304 increased by 75% =
27. 27.300 decreased by 12% =
28. 28.60 decreased by 5% =
29. 29.384 decreased by 25% =
30. 30.180 decreased by 5% =
31. 31.600 decreased by 10% =
32. 32.96 increased by 25% =
33. 33.108 decreased by 25% =
34. 34.105 increased by 20% =
35. 35.420 decreased by 5% =
36. 36.530 increased by 60% =
37. 37.260 increased by 40% =
38. 38.660 increased by 5% =
39. 39.345 increased by 60% =
40. 40.292 increased by 75% =

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