Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 874 · 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. 1.88 decreased by 75% =
2. 2.640 decreased by 15% =
3. 3.250 increased by 8% =
4. 4.570 increased by 30% =
5. 5.475 increased by 12% =
6. 6.320 decreased by 5% =
7. 7.720 increased by 15% =
8. 8.632 increased by 25% =
9. 9.570 decreased by 60% =
10. 10.396 decreased by 75% =
11. 11.92 decreased by 75% =
12. 12.720 increased by 15% =
13. 13.450 decreased by 8% =
14. 14.200 increased by 10% =
15. 15.525 decreased by 12% =
16. 16.40 increased by 35% =
17. 17.175 decreased by 12% =
18. 18.40 decreased by 35% =
19. 19.200 decreased by 8% =
20. 20.775 decreased by 12% =
21. 21.280 increased by 15% =
22. 22.470 increased by 10% =
23. 23.800 decreased by 35% =
24. 24.50 increased by 10% =
25. 25.310 increased by 30% =
26. 26.752 decreased by 50% =
27. 27.215 increased by 60% =
28. 28.360 increased by 35% =
29. 29.52 increased by 75% =
30. 30.232 increased by 75% =
31. 31.515 increased by 40% =
32. 32.550 increased by 10% =
33. 33.600 decreased by 8% =
34. 34.770 increased by 30% =
35. 35.295 decreased by 40% =
36. 36.735 increased by 20% =
37. 37.400 increased by 40% =
38. 38.300 increased by 10% =
39. 39.500 decreased by 60% =
40. 40.660 increased by 15% =

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