Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 630 · 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. 1.370 decreased by 40% =
2. 2.775 increased by 12% =
3. 3.675 decreased by 60% =
4. 4.702 decreased by 50% =
5. 5.160 decreased by 10% =
6. 6.760 decreased by 10% =
7. 7.360 increased by 60% =
8. 8.640 increased by 35% =
9. 9.50 decreased by 8% =
10. 10.225 decreased by 8% =
11. 11.780 increased by 60% =
12. 12.448 decreased by 25% =
13. 13.300 increased by 10% =
14. 14.62 decreased by 50% =
15. 15.425 increased by 8% =
16. 16.150 increased by 8% =
17. 17.250 increased by 8% =
18. 18.195 increased by 60% =
19. 19.340 decreased by 5% =
20. 20.364 decreased by 25% =
21. 21.430 increased by 10% =
22. 22.475 increased by 8% =
23. 23.275 decreased by 8% =
24. 24.500 increased by 5% =
25. 25.800 decreased by 12% =
26. 26.284 increased by 25% =
27. 27.270 decreased by 60% =
28. 28.610 decreased by 10% =
29. 29.655 decreased by 40% =
30. 30.320 increased by 5% =
31. 31.780 decreased by 25% =
32. 32.275 increased by 8% =
33. 33.180 increased by 35% =
34. 34.776 increased by 25% =
35. 35.550 increased by 10% =
36. 36.700 increased by 15% =
37. 37.676 decreased by 25% =
38. 38.620 increased by 15% =
39. 39.525 decreased by 60% =
40. 40.88 decreased by 25% =

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