Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 473 · 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. 1.275 decreased by 40% =
2. 2.780 increased by 35% =
3. 3.300 decreased by 30% =
4. 4.364 decreased by 25% =
5. 5.800 increased by 8% =
6. 6.500 decreased by 8% =
7. 7.660 increased by 5% =
8. 8.316 increased by 25% =
9. 9.575 increased by 12% =
10. 10.550 decreased by 8% =
11. 11.625 increased by 12% =
12. 12.245 increased by 40% =
13. 13.400 increased by 5% =
14. 14.770 increased by 10% =
15. 15.270 increased by 30% =
16. 16.552 decreased by 75% =
17. 17.572 increased by 75% =
18. 18.335 decreased by 20% =
19. 19.130 decreased by 10% =
20. 20.568 increased by 50% =
21. 21.370 decreased by 10% =
22. 22.350 decreased by 8% =
23. 23.350 increased by 20% =
24. 24.155 increased by 20% =
25. 25.150 decreased by 40% =
26. 26.115 decreased by 60% =
27. 27.388 increased by 50% =
28. 28.350 increased by 12% =
29. 29.396 increased by 50% =
30. 30.270 decreased by 10% =
31. 31.800 increased by 5% =
32. 32.772 increased by 75% =
33. 33.600 increased by 60% =
34. 34.475 increased by 12% =
35. 35.420 decreased by 25% =
36. 36.392 decreased by 75% =
37. 37.480 increased by 5% =
38. 38.700 decreased by 12% =
39. 39.640 decreased by 35% =
40. 40.125 decreased by 12% =

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