Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 67 · 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. 1.480 increased by 5% =
2. 2.700 decreased by 10% =
3. 3.360 decreased by 15% =
4. 4.275 increased by 12% =
5. 5.170 decreased by 30% =
6. 6.720 increased by 75% =
7. 7.210 decreased by 40% =
8. 8.600 increased by 5% =
9. 9.260 increased by 75% =
10. 10.350 increased by 12% =
11. 11.500 decreased by 15% =
12. 12.140 decreased by 35% =
13. 13.200 decreased by 8% =
14. 14.460 decreased by 5% =
15. 15.640 increased by 15% =
16. 16.225 decreased by 8% =
17. 17.575 increased by 60% =
18. 18.764 increased by 25% =
19. 19.540 increased by 20% =
20. 20.532 decreased by 50% =
21. 21.150 increased by 30% =
22. 22.472 increased by 50% =
23. 23.220 increased by 5% =
24. 24.378 decreased by 50% =
25. 25.650 increased by 8% =
26. 26.120 increased by 40% =
27. 27.520 decreased by 5% =
28. 28.362 decreased by 50% =
29. 29.640 increased by 35% =
30. 30.40 decreased by 35% =
31. 31.595 decreased by 20% =
32. 32.250 increased by 30% =
33. 33.350 increased by 10% =
34. 34.244 increased by 25% =
35. 35.590 increased by 40% =
36. 36.420 increased by 5% =
37. 37.260 increased by 35% =
38. 38.140 increased by 35% =
39. 39.800 increased by 25% =
40. 40.344 increased by 50% =

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