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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 536 · 40 questions
TalentJR

The fast method (Build from 10%): 10%: divide by 10. 1%: divide by 100. 5% = half of 10%, 20% = double 10%, 15% = 10% + 5%. 50% = half, 25% = half of a half.

NameDateTime takenScore ___ / 40
  1. 1.1% of 430 =
  2. 2.1% of 730 =
  3. 3.20% of 110 =
  4. 4.50% of 320 =
  5. 5.5% of 450 =
  6. 6.25% of 440 =
  7. 7.50% of 600 =
  8. 8.20% of 200 =
  9. 9.1% of 550 =
  10. 10.5% of 810 =
  11. 11.20% of 370 =
  12. 12.10% of 570 =
  13. 13.50% of 180 =
  14. 14.1% of 740 =
  15. 15.25% of 870 =
  16. 16.20% of 340 =
  17. 17.20% of 80 =
  18. 18.20% of 170 =
  19. 19.10% of 140 =
  20. 20.15% of 370 =
  21. 21.1% of 30 =
  22. 22.50% of 670 =
  23. 23.15% of 130 =
  24. 24.25% of 40 =
  25. 25.5% of 90 =
  26. 26.15% of 620 =
  27. 27.20% of 660 =
  28. 28.15% of 590 =
  29. 29.50% of 440 =
  30. 30.50% of 710 =
  31. 31.10% of 790 =
  32. 32.10% of 820 =
  33. 33.5% of 870 =
  34. 34.10% of 150 =
  35. 35.5% of 830 =
  36. 36.25% of 530 =
  37. 37.50% of 620 =
  38. 38.10% of 610 =
  39. 39.20% of 310 =
  40. 40.25% of 30 =

Answer key

  1. 4.3
  2. 7.3
  3. 22
  4. 160
  5. 22.5
  6. 110
  7. 300
  8. 40
  9. 5.5
  10. 40.5
  11. 74
  12. 57
  13. 90
  14. 7.4
  15. 217.5
  16. 68
  17. 16
  18. 34
  19. 14
  20. 55.5
  21. 0.3
  22. 335
  23. 19.5
  24. 10
  25. 4.5
  26. 93
  27. 132
  28. 88.5
  29. 220
  30. 355
  31. 79
  32. 82
  33. 43.5
  34. 15
  35. 41.5
  36. 132.5
  37. 310
  38. 61
  39. 62
  40. 7.5

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