Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 199 · 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. 1.360 increased by 15% =
2. 2.50 decreased by 8% =
3. 3.148 increased by 75% =
4. 4.500 increased by 30% =
5. 5.450 decreased by 12% =
6. 6.360 increased by 20% =
7. 7.100 increased by 10% =
8. 8.260 decreased by 50% =
9. 9.644 decreased by 50% =
10. 10.290 increased by 60% =
11. 11.340 decreased by 60% =
12. 12.160 decreased by 35% =
13. 13.600 increased by 15% =
14. 14.160 decreased by 5% =
15. 15.432 increased by 50% =
16. 16.235 decreased by 20% =
17. 17.195 increased by 20% =
18. 18.370 increased by 10% =
19. 19.180 decreased by 35% =
20. 20.340 decreased by 20% =
21. 21.325 decreased by 8% =
22. 22.112 decreased by 25% =
23. 23.48 increased by 25% =
24. 24.720 decreased by 15% =
25. 25.350 increased by 60% =
26. 26.800 decreased by 5% =
27. 27.320 decreased by 20% =
28. 28.200 decreased by 30% =
29. 29.110 increased by 50% =
30. 30.225 increased by 8% =
31. 31.450 decreased by 20% =
32. 32.250 increased by 8% =
33. 33.320 decreased by 5% =
34. 34.80 decreased by 5% =
35. 35.168 decreased by 75% =
36. 36.696 decreased by 25% =
37. 37.204 decreased by 50% =
38. 38.540 decreased by 60% =
39. 39.50 increased by 40% =
40. 40.720 decreased by 60% =

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