Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 250 · 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. 1.68 decreased by 75% =
2. 2.290 increased by 10% =
3. 3.40 increased by 35% =
4. 4.605 increased by 20% =
5. 5.55 decreased by 20% =
6. 6.490 decreased by 30% =
7. 7.530 increased by 10% =
8. 8.96 decreased by 25% =
9. 9.390 decreased by 30% =
10. 10.590 decreased by 50% =
11. 11.736 increased by 25% =
12. 12.770 decreased by 10% =
13. 13.560 decreased by 75% =
14. 14.190 increased by 10% =
15. 15.770 decreased by 30% =
16. 16.452 decreased by 75% =
17. 17.470 increased by 60% =
18. 18.110 decreased by 60% =
19. 19.80 increased by 15% =
20. 20.410 increased by 30% =
21. 21.80 decreased by 5% =
22. 22.200 decreased by 50% =
23. 23.208 increased by 75% =
24. 24.178 increased by 50% =
25. 25.80 increased by 10% =
26. 26.100 increased by 40% =
27. 27.240 decreased by 15% =
28. 28.565 decreased by 20% =
29. 29.256 increased by 50% =
30. 30.235 decreased by 20% =
31. 31.800 increased by 15% =
32. 32.640 decreased by 15% =
33. 33.180 decreased by 15% =
34. 34.652 decreased by 50% =
35. 35.800 increased by 10% =
36. 36.420 increased by 15% =
37. 37.425 decreased by 60% =
38. 38.700 decreased by 12% =
39. 39.340 decreased by 40% =
40. 40.300 increased by 5% =

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