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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 756 · 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 130 =
  2. 2.15% of 590 =
  3. 3.25% of 560 =
  4. 4.15% of 850 =
  5. 5.10% of 120 =
  6. 6.10% of 40 =
  7. 7.50% of 540 =
  8. 8.10% of 480 =
  9. 9.5% of 120 =
  10. 10.15% of 780 =
  11. 11.1% of 740 =
  12. 12.25% of 730 =
  13. 13.5% of 90 =
  14. 14.20% of 560 =
  15. 15.50% of 60 =
  16. 16.50% of 130 =
  17. 17.10% of 480 =
  18. 18.50% of 850 =
  19. 19.1% of 260 =
  20. 20.10% of 370 =
  21. 21.10% of 340 =
  22. 22.1% of 590 =
  23. 23.5% of 260 =
  24. 24.25% of 560 =
  25. 25.1% of 90 =
  26. 26.10% of 730 =
  27. 27.15% of 180 =
  28. 28.15% of 370 =
  29. 29.5% of 810 =
  30. 30.10% of 850 =
  31. 31.15% of 200 =
  32. 32.1% of 420 =
  33. 33.5% of 570 =
  34. 34.20% of 520 =
  35. 35.5% of 20 =
  36. 36.25% of 870 =
  37. 37.15% of 70 =
  38. 38.5% of 810 =
  39. 39.50% of 40 =
  40. 40.25% of 570 =

Answer key

  1. 1.3
  2. 88.5
  3. 140
  4. 127.5
  5. 12
  6. 4
  7. 270
  8. 48
  9. 6
  10. 117
  11. 7.4
  12. 182.5
  13. 4.5
  14. 112
  15. 30
  16. 65
  17. 48
  18. 425
  19. 2.6
  20. 37
  21. 34
  22. 5.9
  23. 13
  24. 140
  25. 0.9
  26. 73
  27. 27
  28. 55.5
  29. 40.5
  30. 85
  31. 30
  32. 4.2
  33. 28.5
  34. 104
  35. 1
  36. 217.5
  37. 10.5
  38. 40.5
  39. 20
  40. 142.5

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