Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 842 · 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. 1.600 decreased by 20% =
2. 2.480 decreased by 35% =
3. 3.765 decreased by 60% =
4. 4.185 decreased by 20% =
5. 5.536 increased by 50% =
6. 6.225 decreased by 12% =
7. 7.576 decreased by 75% =
8. 8.205 increased by 40% =
9. 9.180 decreased by 40% =
10. 10.162 increased by 50% =
11. 11.618 increased by 50% =
12. 12.720 decreased by 35% =
13. 13.690 increased by 40% =
14. 14.60 decreased by 20% =
15. 15.660 decreased by 15% =
16. 16.224 increased by 75% =
17. 17.615 decreased by 40% =
18. 18.280 increased by 35% =
19. 19.160 increased by 15% =
20. 20.400 decreased by 5% =
21. 21.200 decreased by 8% =
22. 22.360 increased by 5% =
23. 23.330 increased by 10% =
24. 24.268 decreased by 25% =
25. 25.728 increased by 50% =
26. 26.275 increased by 12% =
27. 27.680 increased by 5% =
28. 28.90 increased by 20% =
29. 29.700 decreased by 35% =
30. 30.500 decreased by 30% =
31. 31.516 decreased by 75% =
32. 32.225 increased by 12% =
33. 33.425 increased by 12% =
34. 34.252 increased by 75% =
35. 35.528 increased by 75% =
36. 36.580 increased by 35% =
37. 37.672 decreased by 75% =
38. 38.628 increased by 75% =
39. 39.444 decreased by 25% =
40. 40.275 increased by 12% =

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