Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 376 · 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. 1.730 decreased by 10% =
2. 2.320 decreased by 15% =
3. 3.740 increased by 5% =
4. 4.225 decreased by 20% =
5. 5.164 increased by 50% =
6. 6.430 increased by 40% =
7. 7.725 increased by 60% =
8. 8.220 increased by 35% =
9. 9.746 increased by 50% =
10. 10.670 decreased by 10% =
11. 11.140 increased by 15% =
12. 12.520 decreased by 20% =
13. 13.600 decreased by 15% =
14. 14.338 decreased by 50% =
15. 15.370 decreased by 30% =
16. 16.225 decreased by 12% =
17. 17.172 increased by 50% =
18. 18.75 increased by 12% =
19. 19.60 decreased by 15% =
20. 20.300 decreased by 12% =
21. 21.310 increased by 10% =
22. 22.700 decreased by 20% =
23. 23.710 increased by 10% =
24. 24.740 decreased by 35% =
25. 25.125 decreased by 60% =
26. 26.650 decreased by 12% =
27. 27.40 decreased by 75% =
28. 28.580 decreased by 10% =
29. 29.390 increased by 30% =
30. 30.485 increased by 20% =
31. 31.40 decreased by 35% =
32. 32.200 decreased by 8% =
33. 33.465 increased by 60% =
34. 34.50 increased by 40% =
35. 35.480 decreased by 15% =
36. 36.60 decreased by 35% =
37. 37.125 decreased by 20% =
38. 38.425 increased by 8% =
39. 39.725 decreased by 60% =
40. 40.150 increased by 10% =

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