Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 811 · 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. 1.312 increased by 25% =
2. 2.340 increased by 25% =
3. 3.490 increased by 30% =
4. 4.616 increased by 25% =
5. 5.410 increased by 10% =
6. 6.390 increased by 40% =
7. 7.80 decreased by 15% =
8. 8.468 decreased by 50% =
9. 9.575 increased by 12% =
10. 10.580 decreased by 35% =
11. 11.160 decreased by 15% =
12. 12.125 increased by 12% =
13. 13.200 increased by 35% =
14. 14.152 decreased by 75% =
15. 15.175 decreased by 60% =
16. 16.290 decreased by 20% =
17. 17.80 increased by 15% =
18. 18.252 decreased by 25% =
19. 19.732 increased by 75% =
20. 20.420 increased by 15% =
21. 21.200 decreased by 35% =
22. 22.430 increased by 40% =
23. 23.580 increased by 5% =
24. 24.725 increased by 8% =
25. 25.56 decreased by 50% =
26. 26.150 increased by 12% =
27. 27.310 decreased by 30% =
28. 28.192 decreased by 75% =
29. 29.780 increased by 20% =
30. 30.180 increased by 30% =
31. 31.565 decreased by 40% =
32. 32.175 decreased by 20% =
33. 33.705 increased by 20% =
34. 34.330 increased by 10% =
35. 35.400 increased by 10% =
36. 36.516 increased by 75% =
37. 37.282 increased by 50% =
38. 38.400 decreased by 30% =
39. 39.575 decreased by 8% =
40. 40.425 increased by 20% =

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