Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 337 · 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. 1.410 increased by 30% =
2. 2.100 decreased by 35% =
3. 3.50 increased by 12% =
4. 4.380 increased by 35% =
5. 5.125 increased by 8% =
6. 6.104 decreased by 25% =
7. 7.300 increased by 12% =
8. 8.310 increased by 30% =
9. 9.376 increased by 75% =
10. 10.668 increased by 25% =
11. 11.445 decreased by 20% =
12. 12.40 decreased by 20% =
13. 13.240 increased by 5% =
14. 14.475 decreased by 8% =
15. 15.330 decreased by 50% =
16. 16.528 increased by 50% =
17. 17.100 increased by 12% =
18. 18.325 increased by 40% =
19. 19.380 increased by 15% =
20. 20.455 increased by 20% =
21. 21.40 decreased by 15% =
22. 22.120 increased by 30% =
23. 23.755 increased by 60% =
24. 24.310 decreased by 30% =
25. 25.204 decreased by 75% =
26. 26.390 increased by 10% =
27. 27.450 increased by 40% =
28. 28.75 increased by 8% =
29. 29.552 increased by 75% =
30. 30.308 decreased by 75% =
31. 31.320 decreased by 40% =
32. 32.495 increased by 40% =
33. 33.775 decreased by 8% =
34. 34.550 decreased by 30% =
35. 35.540 decreased by 15% =
36. 36.180 increased by 5% =
37. 37.80 increased by 15% =
38. 38.780 increased by 35% =
39. 39.40 increased by 40% =
40. 40.780 decreased by 10% =

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