Percentage Increase and Decrease Trick Worksheet

Speed calculation lesson 23: Increase or decrease by a percent · Set 399 · 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. 1.540 increased by 5% =
2. 2.275 decreased by 60% =
3. 3.440 increased by 10% =
4. 4.200 increased by 10% =
5. 5.340 decreased by 35% =
6. 6.156 increased by 25% =
7. 7.420 decreased by 35% =
8. 8.740 decreased by 15% =
9. 9.770 increased by 10% =
10. 10.100 decreased by 10% =
11. 11.125 increased by 12% =
12. 12.295 decreased by 60% =
13. 13.680 increased by 35% =
14. 14.360 decreased by 30% =
15. 15.730 increased by 10% =
16. 16.500 decreased by 15% =
17. 17.165 decreased by 40% =
18. 18.658 increased by 50% =
19. 19.625 increased by 40% =
20. 20.745 increased by 20% =
21. 21.718 increased by 50% =
22. 22.475 increased by 8% =
23. 23.320 decreased by 40% =
24. 24.800 decreased by 12% =
25. 25.725 decreased by 8% =
26. 26.350 increased by 12% =
27. 27.220 decreased by 15% =
28. 28.780 increased by 35% =
29. 29.480 increased by 25% =
30. 30.720 increased by 5% =
31. 31.720 increased by 35% =
32. 32.148 increased by 50% =
33. 33.250 increased by 30% =
34. 34.700 increased by 35% =
35. 35.220 increased by 60% =
36. 36.200 decreased by 35% =
37. 37.488 increased by 75% =
38. 38.780 decreased by 30% =
39. 39.668 decreased by 75% =
40. 40.390 decreased by 30% =

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