Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 398 · 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. 1.180 decreased by 5% =
2. 2.708 decreased by 75% =
3. 3.720 decreased by 40% =
4. 4.580 decreased by 10% =
5. 5.302 decreased by 50% =
6. 6.692 decreased by 75% =
7. 7.605 decreased by 60% =
8. 8.700 decreased by 15% =
9. 9.200 increased by 8% =
10. 10.650 increased by 60% =
11. 11.260 increased by 20% =
12. 12.684 increased by 75% =
13. 13.625 decreased by 12% =
14. 14.405 increased by 60% =
15. 15.684 decreased by 25% =
16. 16.488 increased by 25% =
17. 17.300 decreased by 8% =
18. 18.75 decreased by 8% =
19. 19.340 decreased by 5% =
20. 20.600 increased by 10% =
21. 21.280 increased by 15% =
22. 22.200 increased by 8% =
23. 23.780 increased by 60% =
24. 24.740 increased by 35% =
25. 25.760 increased by 15% =
26. 26.400 decreased by 10% =
27. 27.665 increased by 40% =
28. 28.120 decreased by 15% =
29. 29.370 decreased by 30% =
30. 30.365 increased by 60% =
31. 31.50 increased by 12% =
32. 32.150 decreased by 8% =
33. 33.650 increased by 12% =
34. 34.250 decreased by 8% =
35. 35.140 increased by 10% =
36. 36.120 increased by 30% =
37. 37.200 increased by 40% =
38. 38.575 decreased by 8% =
39. 39.800 decreased by 10% =
40. 40.120 increased by 5% =

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