Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 885 · 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. 1.532 decreased by 75% =
2. 2.630 increased by 30% =
3. 3.700 increased by 15% =
4. 4.705 increased by 20% =
5. 5.90 increased by 30% =
6. 6.740 decreased by 5% =
7. 7.400 decreased by 12% =
8. 8.445 increased by 60% =
9. 9.280 decreased by 10% =
10. 10.680 decreased by 30% =
11. 11.175 decreased by 12% =
12. 12.340 decreased by 15% =
13. 13.300 increased by 10% =
14. 14.105 increased by 40% =
15. 15.760 increased by 35% =
16. 16.50 increased by 60% =
17. 17.60 increased by 15% =
18. 18.100 decreased by 12% =
19. 19.72 decreased by 75% =
20. 20.280 decreased by 10% =
21. 21.180 increased by 50% =
22. 22.280 decreased by 10% =
23. 23.724 increased by 75% =
24. 24.675 increased by 8% =
25. 25.75 increased by 8% =
26. 26.530 decreased by 30% =
27. 27.415 decreased by 40% =
28. 28.700 increased by 5% =
29. 29.90 increased by 60% =
30. 30.725 decreased by 12% =
31. 31.175 increased by 8% =
32. 32.310 increased by 10% =
33. 33.240 increased by 15% =
34. 34.130 increased by 40% =
35. 35.580 decreased by 60% =
36. 36.210 increased by 20% =
37. 37.680 decreased by 15% =
38. 38.260 increased by 10% =
39. 39.268 increased by 75% =
40. 40.378 increased by 50% =

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