Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 925 · 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. 1.380 decreased by 75% =
2. 2.394 increased by 50% =
3. 3.550 decreased by 12% =
4. 4.524 increased by 75% =
5. 5.380 increased by 15% =
6. 6.690 decreased by 10% =
7. 7.336 decreased by 50% =
8. 8.660 increased by 5% =
9. 9.216 increased by 25% =
10. 10.480 decreased by 30% =
11. 11.360 increased by 20% =
12. 12.390 decreased by 20% =
13. 13.260 increased by 10% =
14. 14.640 decreased by 60% =
15. 15.700 increased by 35% =
16. 16.640 decreased by 30% =
17. 17.140 increased by 60% =
18. 18.744 decreased by 50% =
19. 19.290 decreased by 60% =
20. 20.736 decreased by 50% =
21. 21.275 decreased by 8% =
22. 22.45 decreased by 20% =
23. 23.52 decreased by 25% =
24. 24.720 increased by 10% =
25. 25.684 decreased by 25% =
26. 26.200 increased by 50% =
27. 27.176 decreased by 75% =
28. 28.185 decreased by 40% =
29. 29.116 increased by 25% =
30. 30.290 decreased by 60% =
31. 31.80 increased by 40% =
32. 32.262 increased by 50% =
33. 33.316 decreased by 75% =
34. 34.495 decreased by 40% =
35. 35.300 decreased by 30% =
36. 36.52 increased by 50% =
37. 37.680 increased by 15% =
38. 38.640 decreased by 35% =
39. 39.500 increased by 15% =
40. 40.325 decreased by 12% =

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