Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 971 · 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. 1.276 increased by 50% =
2. 2.310 decreased by 30% =
3. 3.640 increased by 10% =
4. 4.120 increased by 10% =
5. 5.40 decreased by 35% =
6. 6.620 increased by 15% =
7. 7.530 decreased by 30% =
8. 8.200 decreased by 30% =
9. 9.658 decreased by 50% =
10. 10.680 decreased by 30% =
11. 11.200 decreased by 75% =
12. 12.150 decreased by 8% =
13. 13.160 increased by 15% =
14. 14.542 increased by 50% =
15. 15.315 increased by 20% =
16. 16.68 decreased by 75% =
17. 17.480 increased by 35% =
18. 18.330 increased by 30% =
19. 19.130 increased by 40% =
20. 20.360 decreased by 15% =
21. 21.220 decreased by 10% =
22. 22.40 increased by 60% =
23. 23.500 increased by 15% =
24. 24.360 increased by 15% =
25. 25.610 decreased by 50% =
26. 26.500 increased by 30% =
27. 27.692 increased by 75% =
28. 28.700 decreased by 30% =
29. 29.630 increased by 30% =
30. 30.280 increased by 35% =
31. 31.440 decreased by 25% =
32. 32.390 decreased by 40% =
33. 33.170 decreased by 30% =
34. 34.475 increased by 12% =
35. 35.510 decreased by 50% =
36. 36.790 increased by 40% =
37. 37.575 decreased by 60% =
38. 38.625 decreased by 8% =
39. 39.300 decreased by 30% =
40. 40.640 decreased by 30% =

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