Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 270 · 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. 1.570 increased by 60% =
2. 2.540 increased by 60% =
3. 3.50 increased by 12% =
4. 4.750 decreased by 8% =
5. 5.120 decreased by 50% =
6. 6.140 decreased by 5% =
7. 7.160 decreased by 5% =
8. 8.620 increased by 5% =
9. 9.520 increased by 35% =
10. 10.610 decreased by 10% =
11. 11.225 increased by 12% =
12. 12.116 decreased by 75% =
13. 13.485 increased by 20% =
14. 14.240 decreased by 15% =
15. 15.240 increased by 10% =
16. 16.120 decreased by 5% =
17. 17.60 increased by 30% =
18. 18.540 increased by 5% =
19. 19.538 decreased by 50% =
20. 20.735 decreased by 40% =
21. 21.250 increased by 12% =
22. 22.220 increased by 15% =
23. 23.760 increased by 20% =
24. 24.340 decreased by 20% =
25. 25.220 decreased by 30% =
26. 26.60 decreased by 10% =
27. 27.680 increased by 30% =
28. 28.420 increased by 50% =
29. 29.280 decreased by 10% =
30. 30.618 decreased by 50% =
31. 31.225 decreased by 12% =
32. 32.60 increased by 35% =
33. 33.475 increased by 40% =
34. 34.280 decreased by 35% =
35. 35.540 decreased by 10% =
36. 36.500 increased by 15% =
37. 37.146 increased by 50% =
38. 38.752 increased by 50% =
39. 39.295 increased by 60% =
40. 40.760 increased by 5% =

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