Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 981 · 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. 1.140 increased by 50% =
2. 2.320 increased by 60% =
3. 3.195 decreased by 60% =
4. 4.180 decreased by 5% =
5. 5.140 decreased by 15% =
6. 6.120 decreased by 75% =
7. 7.425 increased by 8% =
8. 8.468 decreased by 50% =
9. 9.700 increased by 15% =
10. 10.220 decreased by 5% =
11. 11.525 decreased by 20% =
12. 12.800 decreased by 40% =
13. 13.460 decreased by 35% =
14. 14.348 decreased by 50% =
15. 15.130 decreased by 30% =
16. 16.300 decreased by 5% =
17. 17.240 increased by 5% =
18. 18.80 increased by 20% =
19. 19.190 decreased by 20% =
20. 20.420 decreased by 10% =
21. 21.200 increased by 35% =
22. 22.768 decreased by 75% =
23. 23.780 decreased by 5% =
24. 24.752 decreased by 25% =
25. 25.45 increased by 40% =
26. 26.275 decreased by 60% =
27. 27.40 decreased by 15% =
28. 28.540 increased by 5% =
29. 29.150 increased by 10% =
30. 30.80 increased by 60% =
31. 31.368 decreased by 25% =
32. 32.470 decreased by 10% =
33. 33.200 increased by 15% =
34. 34.512 increased by 75% =
35. 35.625 increased by 40% =
36. 36.375 increased by 12% =
37. 37.744 decreased by 75% =
38. 38.760 increased by 5% =
39. 39.475 increased by 40% =
40. 40.360 increased by 20% =

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