Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 985 · 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. 1.435 decreased by 20% =
2. 2.400 increased by 25% =
3. 3.500 decreased by 8% =
4. 4.675 increased by 8% =
5. 5.40 decreased by 15% =
6. 6.50 increased by 12% =
7. 7.300 decreased by 10% =
8. 8.675 increased by 12% =
9. 9.725 increased by 20% =
10. 10.710 increased by 40% =
11. 11.288 decreased by 75% =
12. 12.420 decreased by 10% =
13. 13.780 decreased by 35% =
14. 14.265 decreased by 20% =
15. 15.100 increased by 10% =
16. 16.80 increased by 40% =
17. 17.210 increased by 10% =
18. 18.262 increased by 50% =
19. 19.252 decreased by 75% =
20. 20.200 decreased by 5% =
21. 21.730 decreased by 30% =
22. 22.580 decreased by 15% =
23. 23.620 decreased by 35% =
24. 24.340 increased by 30% =
25. 25.480 increased by 35% =
26. 26.600 decreased by 12% =
27. 27.480 decreased by 50% =
28. 28.800 increased by 15% =
29. 29.395 increased by 60% =
30. 30.230 decreased by 20% =
31. 31.800 increased by 35% =
32. 32.388 increased by 75% =
33. 33.580 increased by 5% =
34. 34.200 decreased by 10% =
35. 35.172 decreased by 75% =
36. 36.745 increased by 40% =
37. 37.140 increased by 15% =
38. 38.770 increased by 10% =
39. 39.175 increased by 60% =
40. 40.320 increased by 35% =

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