Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 711 · 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. 1.772 increased by 75% =
2. 2.380 increased by 10% =
3. 3.125 increased by 8% =
4. 4.660 increased by 15% =
5. 5.620 decreased by 15% =
6. 6.478 increased by 50% =
7. 7.775 increased by 12% =
8. 8.312 decreased by 75% =
9. 9.190 increased by 40% =
10. 10.796 increased by 25% =
11. 11.85 increased by 20% =
12. 12.720 increased by 10% =
13. 13.600 decreased by 35% =
14. 14.680 increased by 20% =
15. 15.685 decreased by 40% =
16. 16.550 decreased by 40% =
17. 17.80 decreased by 10% =
18. 18.580 increased by 5% =
19. 19.75 increased by 12% =
20. 20.470 decreased by 30% =
21. 21.575 increased by 12% =
22. 22.770 increased by 60% =
23. 23.140 increased by 5% =
24. 24.590 increased by 10% =
25. 25.640 decreased by 30% =
26. 26.135 decreased by 40% =
27. 27.752 increased by 25% =
28. 28.170 decreased by 30% =
29. 29.468 decreased by 25% =
30. 30.288 increased by 25% =
31. 31.164 increased by 75% =
32. 32.640 increased by 60% =
33. 33.224 increased by 75% =
34. 34.240 decreased by 5% =
35. 35.200 increased by 5% =
36. 36.425 increased by 12% =
37. 37.100 increased by 30% =
38. 38.780 increased by 15% =
39. 39.540 decreased by 50% =
40. 40.160 increased by 35% =

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