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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 293 · 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. 1.20% of 190 =
  2. 2.15% of 240 =
  3. 3.10% of 520 =
  4. 4.1% of 810 =
  5. 5.1% of 650 =
  6. 6.5% of 880 =
  7. 7.50% of 290 =
  8. 8.1% of 680 =
  9. 9.5% of 250 =
  10. 10.20% of 80 =
  11. 11.20% of 610 =
  12. 12.1% of 720 =
  13. 13.50% of 760 =
  14. 14.50% of 70 =
  15. 15.20% of 640 =
  16. 16.10% of 60 =
  17. 17.25% of 820 =
  18. 18.20% of 190 =
  19. 19.15% of 740 =
  20. 20.5% of 750 =
  21. 21.50% of 780 =
  22. 22.5% of 260 =
  23. 23.10% of 80 =
  24. 24.5% of 900 =
  25. 25.10% of 80 =
  26. 26.1% of 170 =
  27. 27.20% of 330 =
  28. 28.1% of 380 =
  29. 29.25% of 420 =
  30. 30.10% of 430 =
  31. 31.1% of 140 =
  32. 32.1% of 320 =
  33. 33.1% of 20 =
  34. 34.15% of 400 =
  35. 35.10% of 820 =
  36. 36.5% of 700 =
  37. 37.10% of 410 =
  38. 38.15% of 890 =
  39. 39.5% of 460 =
  40. 40.10% of 70 =

Answer key

  1. 38
  2. 36
  3. 52
  4. 8.1
  5. 6.5
  6. 44
  7. 145
  8. 6.8
  9. 12.5
  10. 16
  11. 122
  12. 7.2
  13. 380
  14. 35
  15. 128
  16. 6
  17. 205
  18. 38
  19. 111
  20. 37.5
  21. 390
  22. 13
  23. 8
  24. 45
  25. 8
  26. 1.7
  27. 66
  28. 3.8
  29. 105
  30. 43
  31. 1.4
  32. 3.2
  33. 0.2
  34. 60
  35. 82
  36. 35
  37. 41
  38. 133.5
  39. 23
  40. 7

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