Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 631 · 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. 1.150 increased by 30% =
2. 2.540 decreased by 15% =
3. 3.82 increased by 50% =
4. 4.616 increased by 25% =
5. 5.660 increased by 35% =
6. 6.350 decreased by 12% =
7. 7.668 increased by 50% =
8. 8.100 increased by 35% =
9. 9.125 decreased by 8% =
10. 10.675 increased by 12% =
11. 11.50 increased by 8% =
12. 12.120 increased by 15% =
13. 13.125 increased by 12% =
14. 14.85 decreased by 20% =
15. 15.380 increased by 10% =
16. 16.334 increased by 50% =
17. 17.42 increased by 50% =
18. 18.530 increased by 10% =
19. 19.660 decreased by 30% =
20. 20.620 decreased by 10% =
21. 21.112 increased by 50% =
22. 22.360 decreased by 20% =
23. 23.360 increased by 60% =
24. 24.480 decreased by 35% =
25. 25.675 increased by 8% =
26. 26.130 decreased by 60% =
27. 27.780 decreased by 30% =
28. 28.240 decreased by 5% =
29. 29.208 decreased by 25% =
30. 30.40 increased by 60% =
31. 31.700 increased by 60% =
32. 32.140 increased by 5% =
33. 33.315 increased by 20% =
34. 34.80 increased by 25% =
35. 35.40 decreased by 35% =
36. 36.240 increased by 15% =
37. 37.260 decreased by 35% =
38. 38.60 decreased by 20% =
39. 39.425 increased by 20% =
40. 40.200 increased by 40% =

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