Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 39 · 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. 1.770 increased by 10% =
2. 2.580 decreased by 5% =
3. 3.470 decreased by 20% =
4. 4.60 increased by 40% =
5. 5.490 increased by 30% =
6. 6.650 increased by 20% =
7. 7.190 decreased by 60% =
8. 8.656 increased by 50% =
9. 9.55 increased by 40% =
10. 10.116 decreased by 50% =
11. 11.620 increased by 35% =
12. 12.535 increased by 60% =
13. 13.722 increased by 50% =
14. 14.495 increased by 40% =
15. 15.288 increased by 50% =
16. 16.500 decreased by 12% =
17. 17.760 increased by 25% =
18. 18.500 decreased by 8% =
19. 19.180 decreased by 30% =
20. 20.586 decreased by 50% =
21. 21.80 decreased by 15% =
22. 22.468 increased by 75% =
23. 23.280 decreased by 10% =
24. 24.400 increased by 30% =
25. 25.410 increased by 30% =
26. 26.725 decreased by 12% =
27. 27.360 decreased by 5% =
28. 28.175 increased by 12% =
29. 29.380 increased by 60% =
30. 30.256 increased by 25% =
31. 31.292 decreased by 75% =
32. 32.140 increased by 25% =
33. 33.670 increased by 40% =
34. 34.620 decreased by 60% =
35. 35.380 decreased by 5% =
36. 36.200 increased by 12% =
37. 37.52 increased by 25% =
38. 38.120 decreased by 35% =
39. 39.420 increased by 5% =
40. 40.600 decreased by 10% =

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