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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 279 · 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. 1.50% of 890 =
  2. 2.20% of 130 =
  3. 3.15% of 440 =
  4. 4.15% of 720 =
  5. 5.20% of 40 =
  6. 6.20% of 800 =
  7. 7.5% of 760 =
  8. 8.50% of 450 =
  9. 9.5% of 20 =
  10. 10.15% of 840 =
  11. 11.10% of 380 =
  12. 12.5% of 50 =
  13. 13.15% of 460 =
  14. 14.5% of 880 =
  15. 15.50% of 120 =
  16. 16.50% of 480 =
  17. 17.20% of 130 =
  18. 18.20% of 580 =
  19. 19.20% of 600 =
  20. 20.1% of 660 =
  21. 21.50% of 780 =
  22. 22.5% of 590 =
  23. 23.20% of 460 =
  24. 24.20% of 290 =
  25. 25.5% of 850 =
  26. 26.15% of 310 =
  27. 27.10% of 500 =
  28. 28.25% of 330 =
  29. 29.5% of 460 =
  30. 30.15% of 110 =
  31. 31.5% of 180 =
  32. 32.5% of 440 =
  33. 33.10% of 190 =
  34. 34.10% of 630 =
  35. 35.20% of 440 =
  36. 36.15% of 220 =
  37. 37.10% of 110 =
  38. 38.10% of 290 =
  39. 39.50% of 470 =
  40. 40.5% of 790 =

Answer key

  1. 445
  2. 26
  3. 66
  4. 108
  5. 8
  6. 160
  7. 38
  8. 225
  9. 1
  10. 126
  11. 38
  12. 2.5
  13. 69
  14. 44
  15. 60
  16. 240
  17. 26
  18. 116
  19. 120
  20. 6.6
  21. 390
  22. 29.5
  23. 92
  24. 58
  25. 42.5
  26. 46.5
  27. 50
  28. 82.5
  29. 23
  30. 16.5
  31. 9
  32. 22
  33. 19
  34. 63
  35. 88
  36. 33
  37. 11
  38. 29
  39. 235
  40. 39.5

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