Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 217 · 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. 1.200 decreased by 15% =
2. 2.800 decreased by 35% =
3. 3.340 increased by 5% =
4. 4.175 increased by 12% =
5. 5.80 increased by 40% =
6. 6.252 increased by 75% =
7. 7.140 increased by 30% =
8. 8.740 increased by 15% =
9. 9.320 decreased by 35% =
10. 10.300 decreased by 8% =
11. 11.180 increased by 15% =
12. 12.240 decreased by 15% =
13. 13.700 decreased by 60% =
14. 14.140 increased by 60% =
15. 15.520 decreased by 15% =
16. 16.315 decreased by 40% =
17. 17.320 decreased by 30% =
18. 18.800 decreased by 8% =
19. 19.720 increased by 5% =
20. 20.660 decreased by 5% =
21. 21.85 decreased by 40% =
22. 22.620 decreased by 15% =
23. 23.525 increased by 8% =
24. 24.200 decreased by 15% =
25. 25.336 decreased by 75% =
26. 26.428 increased by 75% =
27. 27.545 increased by 20% =
28. 28.724 increased by 25% =
29. 29.300 increased by 60% =
30. 30.740 increased by 10% =
31. 31.380 increased by 15% =
32. 32.145 increased by 20% =
33. 33.650 increased by 8% =
34. 34.570 increased by 20% =
35. 35.380 decreased by 25% =
36. 36.140 increased by 35% =
37. 37.304 increased by 25% =
38. 38.760 increased by 60% =
39. 39.510 decreased by 40% =
40. 40.794 increased by 50% =

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