Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 307 · 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. 1.425 decreased by 12% =
2. 2.105 increased by 60% =
3. 3.600 decreased by 5% =
4. 4.790 decreased by 60% =
5. 5.40 increased by 20% =
6. 6.655 decreased by 40% =
7. 7.375 decreased by 12% =
8. 8.280 decreased by 35% =
9. 9.200 decreased by 5% =
10. 10.250 increased by 12% =
11. 11.175 increased by 12% =
12. 12.785 increased by 20% =
13. 13.405 increased by 20% =
14. 14.360 decreased by 15% =
15. 15.360 decreased by 10% =
16. 16.135 decreased by 40% =
17. 17.45 decreased by 20% =
18. 18.85 decreased by 20% =
19. 19.740 decreased by 30% =
20. 20.90 decreased by 10% =
21. 21.376 increased by 75% =
22. 22.538 decreased by 50% =
23. 23.340 decreased by 15% =
24. 24.55 increased by 40% =
25. 25.700 increased by 5% =
26. 26.675 increased by 12% =
27. 27.778 increased by 50% =
28. 28.120 increased by 25% =
29. 29.250 decreased by 20% =
30. 30.275 decreased by 12% =
31. 31.732 decreased by 25% =
32. 32.275 increased by 8% =
33. 33.775 increased by 20% =
34. 34.720 decreased by 5% =
35. 35.84 decreased by 75% =
36. 36.40 increased by 15% =
37. 37.720 decreased by 5% =
38. 38.100 increased by 30% =
39. 39.775 increased by 20% =
40. 40.250 increased by 50% =

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