Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 445 · 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. 1.466 increased by 50% =
2. 2.540 increased by 30% =
3. 3.675 increased by 12% =
4. 4.740 increased by 15% =
5. 5.310 decreased by 10% =
6. 6.590 increased by 20% =
7. 7.400 decreased by 30% =
8. 8.430 decreased by 10% =
9. 9.620 decreased by 35% =
10. 10.225 increased by 8% =
11. 11.500 increased by 35% =
12. 12.500 decreased by 30% =
13. 13.586 decreased by 50% =
14. 14.375 decreased by 12% =
15. 15.400 increased by 5% =
16. 16.60 increased by 40% =
17. 17.240 increased by 20% =
18. 18.65 increased by 40% =
19. 19.780 decreased by 30% =
20. 20.620 decreased by 10% =
21. 21.125 decreased by 8% =
22. 22.230 decreased by 60% =
23. 23.325 decreased by 12% =
24. 24.40 decreased by 75% =
25. 25.230 decreased by 50% =
26. 26.420 increased by 5% =
27. 27.775 increased by 8% =
28. 28.280 increased by 25% =
29. 29.530 increased by 10% =
30. 30.620 increased by 35% =
31. 31.800 decreased by 5% =
32. 32.640 decreased by 5% =
33. 33.640 increased by 15% =
34. 34.552 decreased by 75% =
35. 35.410 increased by 30% =
36. 36.156 increased by 25% =
37. 37.376 increased by 75% =
38. 38.205 increased by 60% =
39. 39.620 increased by 60% =
40. 40.214 increased by 50% =

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