Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 346 · 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. 1.760 increased by 20% =
2. 2.175 increased by 8% =
3. 3.780 increased by 20% =
4. 4.730 decreased by 30% =
5. 5.320 decreased by 15% =
6. 6.700 decreased by 50% =
7. 7.700 increased by 20% =
8. 8.300 decreased by 20% =
9. 9.240 increased by 5% =
10. 10.655 increased by 40% =
11. 11.770 decreased by 20% =
12. 12.260 decreased by 20% =
13. 13.336 increased by 75% =
14. 14.468 increased by 25% =
15. 15.500 increased by 15% =
16. 16.410 decreased by 20% =
17. 17.775 decreased by 8% =
18. 18.40 decreased by 10% =
19. 19.108 increased by 25% =
20. 20.640 increased by 35% =
21. 21.300 decreased by 15% =
22. 22.420 increased by 15% =
23. 23.150 increased by 8% =
24. 24.610 decreased by 50% =
25. 25.520 decreased by 15% =
26. 26.560 decreased by 15% =
27. 27.120 decreased by 5% =
28. 28.540 decreased by 5% =
29. 29.740 decreased by 10% =
30. 30.356 increased by 25% =
31. 31.40 decreased by 20% =
32. 32.100 decreased by 15% =
33. 33.90 increased by 20% =
34. 34.720 increased by 5% =
35. 35.420 increased by 35% =
36. 36.290 decreased by 30% =
37. 37.428 increased by 25% =
38. 38.340 decreased by 25% =
39. 39.525 increased by 8% =
40. 40.300 decreased by 30% =

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