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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 407 · 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. 1.5% of 780 =
  2. 2.20% of 300 =
  3. 3.1% of 200 =
  4. 4.1% of 360 =
  5. 5.5% of 740 =
  6. 6.1% of 570 =
  7. 7.1% of 670 =
  8. 8.5% of 220 =
  9. 9.10% of 320 =
  10. 10.50% of 570 =
  11. 11.5% of 900 =
  12. 12.1% of 590 =
  13. 13.5% of 20 =
  14. 14.15% of 800 =
  15. 15.15% of 780 =
  16. 16.25% of 440 =
  17. 17.10% of 790 =
  18. 18.50% of 60 =
  19. 19.50% of 890 =
  20. 20.25% of 160 =
  21. 21.5% of 420 =
  22. 22.10% of 460 =
  23. 23.25% of 410 =
  24. 24.20% of 370 =
  25. 25.10% of 50 =
  26. 26.50% of 590 =
  27. 27.50% of 630 =
  28. 28.10% of 330 =
  29. 29.20% of 810 =
  30. 30.1% of 490 =
  31. 31.25% of 330 =
  32. 32.20% of 350 =
  33. 33.10% of 230 =
  34. 34.20% of 110 =
  35. 35.50% of 120 =
  36. 36.10% of 780 =
  37. 37.10% of 580 =
  38. 38.50% of 160 =
  39. 39.25% of 70 =
  40. 40.15% of 290 =

Answer key

  1. 39
  2. 60
  3. 2
  4. 3.6
  5. 37
  6. 5.7
  7. 6.7
  8. 11
  9. 32
  10. 285
  11. 45
  12. 5.9
  13. 1
  14. 120
  15. 117
  16. 110
  17. 79
  18. 30
  19. 445
  20. 40
  21. 21
  22. 46
  23. 102.5
  24. 74
  25. 5
  26. 295
  27. 315
  28. 33
  29. 162
  30. 4.9
  31. 82.5
  32. 70
  33. 23
  34. 22
  35. 60
  36. 78
  37. 58
  38. 80
  39. 17.5
  40. 43.5

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