Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 297 · 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. 1.680 increased by 40% =
2. 2.170 increased by 60% =
3. 3.55 increased by 60% =
4. 4.580 increased by 10% =
5. 5.690 decreased by 10% =
6. 6.400 increased by 25% =
7. 7.685 decreased by 40% =
8. 8.360 increased by 30% =
9. 9.260 increased by 5% =
10. 10.432 decreased by 50% =
11. 11.375 decreased by 12% =
12. 12.190 increased by 50% =
13. 13.270 increased by 30% =
14. 14.750 decreased by 60% =
15. 15.130 increased by 40% =
16. 16.420 decreased by 35% =
17. 17.500 increased by 12% =
18. 18.800 decreased by 8% =
19. 19.400 increased by 8% =
20. 20.150 increased by 20% =
21. 21.60 increased by 10% =
22. 22.190 increased by 60% =
23. 23.580 decreased by 15% =
24. 24.740 decreased by 75% =
25. 25.300 decreased by 20% =
26. 26.750 decreased by 8% =
27. 27.140 increased by 35% =
28. 28.620 decreased by 15% =
29. 29.235 decreased by 20% =
30. 30.195 increased by 20% =
31. 31.525 increased by 20% =
32. 32.700 decreased by 10% =
33. 33.50 decreased by 30% =
34. 34.576 increased by 25% =
35. 35.586 increased by 50% =
36. 36.730 decreased by 10% =
37. 37.300 decreased by 40% =
38. 38.244 increased by 25% =
39. 39.170 decreased by 30% =
40. 40.155 increased by 20% =

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