Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 322 · 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. 1.390 increased by 10% =
2. 2.580 increased by 30% =
3. 3.718 decreased by 50% =
4. 4.175 increased by 8% =
5. 5.60 increased by 5% =
6. 6.620 increased by 20% =
7. 7.760 increased by 40% =
8. 8.56 increased by 75% =
9. 9.150 decreased by 8% =
10. 10.700 increased by 5% =
11. 11.144 increased by 50% =
12. 12.328 increased by 75% =
13. 13.116 decreased by 25% =
14. 14.110 decreased by 40% =
15. 15.630 decreased by 30% =
16. 16.790 increased by 50% =
17. 17.40 increased by 35% =
18. 18.300 decreased by 30% =
19. 19.550 decreased by 60% =
20. 20.570 increased by 30% =
21. 21.275 decreased by 12% =
22. 22.375 decreased by 8% =
23. 23.50 decreased by 12% =
24. 24.525 increased by 12% =
25. 25.400 decreased by 12% =
26. 26.75 increased by 8% =
27. 27.690 decreased by 50% =
28. 28.740 increased by 15% =
29. 29.600 decreased by 35% =
30. 30.680 decreased by 15% =
31. 31.375 decreased by 8% =
32. 32.630 increased by 60% =
33. 33.204 increased by 75% =
34. 34.668 decreased by 75% =
35. 35.800 decreased by 15% =
36. 36.660 increased by 15% =
37. 37.150 decreased by 8% =
38. 38.320 decreased by 30% =
39. 39.240 increased by 5% =
40. 40.220 decreased by 40% =

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