Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 561 · 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. 1.430 decreased by 10% =
2. 2.690 increased by 10% =
3. 3.370 decreased by 20% =
4. 4.750 increased by 12% =
5. 5.375 decreased by 8% =
6. 6.328 decreased by 25% =
7. 7.400 increased by 5% =
8. 8.340 decreased by 35% =
9. 9.190 increased by 30% =
10. 10.600 increased by 25% =
11. 11.668 increased by 75% =
12. 12.670 increased by 10% =
13. 13.100 increased by 35% =
14. 14.152 increased by 25% =
15. 15.620 increased by 20% =
16. 16.720 decreased by 10% =
17. 17.540 increased by 5% =
18. 18.705 decreased by 60% =
19. 19.750 increased by 12% =
20. 20.720 increased by 50% =
21. 21.530 decreased by 20% =
22. 22.600 decreased by 35% =
23. 23.150 increased by 40% =
24. 24.640 decreased by 15% =
25. 25.316 decreased by 25% =
26. 26.180 increased by 5% =
27. 27.190 increased by 40% =
28. 28.380 increased by 35% =
29. 29.500 increased by 12% =
30. 30.100 decreased by 10% =
31. 31.50 increased by 30% =
32. 32.660 decreased by 35% =
33. 33.380 increased by 10% =
34. 34.375 decreased by 60% =
35. 35.680 decreased by 15% =
36. 36.705 increased by 40% =
37. 37.180 decreased by 5% =
38. 38.195 increased by 40% =
39. 39.100 increased by 30% =
40. 40.430 increased by 30% =

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