Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 291 · 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. 1.800 decreased by 25% =
2. 2.80 decreased by 5% =
3. 3.745 decreased by 40% =
4. 4.640 decreased by 5% =
5. 5.760 increased by 5% =
6. 6.312 decreased by 25% =
7. 7.380 decreased by 30% =
8. 8.360 increased by 35% =
9. 9.740 increased by 15% =
10. 10.600 increased by 35% =
11. 11.392 increased by 25% =
12. 12.540 increased by 10% =
13. 13.284 decreased by 75% =
14. 14.180 increased by 50% =
15. 15.512 increased by 50% =
16. 16.360 decreased by 15% =
17. 17.225 decreased by 8% =
18. 18.272 increased by 50% =
19. 19.260 increased by 25% =
20. 20.660 increased by 35% =
21. 21.480 increased by 15% =
22. 22.640 increased by 15% =
23. 23.40 decreased by 20% =
24. 24.325 decreased by 60% =
25. 25.160 increased by 30% =
26. 26.520 increased by 5% =
27. 27.84 decreased by 25% =
28. 28.620 decreased by 50% =
29. 29.410 increased by 50% =
30. 30.256 decreased by 25% =
31. 31.70 increased by 60% =
32. 32.130 increased by 10% =
33. 33.190 increased by 30% =
34. 34.120 decreased by 60% =
35. 35.700 decreased by 35% =
36. 36.800 increased by 8% =
37. 37.220 increased by 15% =
38. 38.230 increased by 20% =
39. 39.740 decreased by 25% =
40. 40.456 increased by 25% =

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