Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 853 · 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. 1.320 increased by 10% =
2. 2.460 decreased by 30% =
3. 3.380 increased by 35% =
4. 4.320 increased by 30% =
5. 5.400 increased by 20% =
6. 6.760 increased by 15% =
7. 7.445 decreased by 20% =
8. 8.380 increased by 35% =
9. 9.110 decreased by 30% =
10. 10.768 decreased by 25% =
11. 11.660 increased by 15% =
12. 12.480 decreased by 10% =
13. 13.396 decreased by 75% =
14. 14.720 increased by 25% =
15. 15.760 decreased by 35% =
16. 16.800 decreased by 35% =
17. 17.690 increased by 10% =
18. 18.520 increased by 10% =
19. 19.710 increased by 20% =
20. 20.440 decreased by 15% =
21. 21.550 decreased by 12% =
22. 22.630 decreased by 30% =
23. 23.720 decreased by 15% =
24. 24.420 decreased by 5% =
25. 25.660 decreased by 10% =
26. 26.240 decreased by 5% =
27. 27.140 increased by 15% =
28. 28.545 increased by 60% =
29. 29.200 increased by 40% =
30. 30.415 decreased by 40% =
31. 31.710 increased by 40% =
32. 32.715 increased by 20% =
33. 33.170 increased by 20% =
34. 34.124 increased by 75% =
35. 35.145 increased by 20% =
36. 36.620 decreased by 60% =
37. 37.88 decreased by 75% =
38. 38.760 increased by 15% =
39. 39.296 increased by 75% =
40. 40.224 increased by 25% =

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