Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 867 · 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. 1.120 decreased by 5% =
2. 2.800 increased by 40% =
3. 3.120 increased by 15% =
4. 4.85 decreased by 40% =
5. 5.550 increased by 12% =
6. 6.150 decreased by 12% =
7. 7.80 increased by 15% =
8. 8.585 decreased by 60% =
9. 9.388 increased by 50% =
10. 10.270 increased by 10% =
11. 11.60 increased by 35% =
12. 12.610 increased by 20% =
13. 13.745 increased by 20% =
14. 14.220 increased by 10% =
15. 15.200 increased by 25% =
16. 16.500 decreased by 8% =
17. 17.200 decreased by 20% =
18. 18.565 increased by 20% =
19. 19.670 decreased by 40% =
20. 20.400 decreased by 10% =
21. 21.220 decreased by 10% =
22. 22.400 increased by 8% =
23. 23.588 increased by 75% =
24. 24.55 increased by 20% =
25. 25.570 increased by 10% =
26. 26.610 decreased by 30% =
27. 27.500 increased by 20% =
28. 28.680 decreased by 25% =
29. 29.620 increased by 75% =
30. 30.520 decreased by 5% =
31. 31.140 decreased by 5% =
32. 32.525 decreased by 8% =
33. 33.120 increased by 15% =
34. 34.492 decreased by 25% =
35. 35.125 decreased by 8% =
36. 36.800 decreased by 35% =
37. 37.675 decreased by 60% =
38. 38.420 decreased by 15% =
39. 39.525 increased by 8% =
40. 40.655 decreased by 60% =

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