Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 94 · 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. 1.720 increased by 15% =
2. 2.650 increased by 8% =
3. 3.500 increased by 35% =
4. 4.700 increased by 75% =
5. 5.90 decreased by 20% =
6. 6.250 increased by 8% =
7. 7.700 increased by 40% =
8. 8.280 decreased by 5% =
9. 9.535 increased by 20% =
10. 10.555 increased by 20% =
11. 11.660 decreased by 35% =
12. 12.720 increased by 35% =
13. 13.660 increased by 15% =
14. 14.460 decreased by 15% =
15. 15.255 increased by 20% =
16. 16.215 decreased by 60% =
17. 17.180 increased by 35% =
18. 18.480 increased by 60% =
19. 19.450 increased by 10% =
20. 20.100 increased by 8% =
21. 21.182 increased by 50% =
22. 22.250 increased by 12% =
23. 23.420 increased by 10% =
24. 24.300 increased by 30% =
25. 25.160 decreased by 5% =
26. 26.260 increased by 15% =
27. 27.480 increased by 15% =
28. 28.475 decreased by 40% =
29. 29.130 increased by 30% =
30. 30.328 decreased by 25% =
31. 31.140 increased by 15% =
32. 32.388 decreased by 50% =
33. 33.370 increased by 20% =
34. 34.340 increased by 15% =
35. 35.140 increased by 35% =
36. 36.145 decreased by 40% =
37. 37.360 increased by 35% =
38. 38.508 decreased by 50% =
39. 39.740 decreased by 30% =
40. 40.50 decreased by 8% =

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