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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 203 · 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. 1.15% of 600 =
  2. 2.25% of 320 =
  3. 3.1% of 440 =
  4. 4.1% of 500 =
  5. 5.10% of 790 =
  6. 6.10% of 60 =
  7. 7.15% of 140 =
  8. 8.10% of 120 =
  9. 9.15% of 440 =
  10. 10.25% of 580 =
  11. 11.5% of 90 =
  12. 12.15% of 50 =
  13. 13.1% of 370 =
  14. 14.5% of 320 =
  15. 15.5% of 50 =
  16. 16.1% of 260 =
  17. 17.15% of 680 =
  18. 18.15% of 300 =
  19. 19.15% of 540 =
  20. 20.10% of 200 =
  21. 21.10% of 340 =
  22. 22.15% of 430 =
  23. 23.10% of 60 =
  24. 24.1% of 320 =
  25. 25.50% of 330 =
  26. 26.5% of 100 =
  27. 27.25% of 40 =
  28. 28.10% of 710 =
  29. 29.1% of 460 =
  30. 30.25% of 250 =
  31. 31.10% of 850 =
  32. 32.1% of 790 =
  33. 33.10% of 390 =
  34. 34.5% of 680 =
  35. 35.15% of 30 =
  36. 36.5% of 140 =
  37. 37.20% of 350 =
  38. 38.10% of 660 =
  39. 39.20% of 210 =
  40. 40.15% of 190 =

Answer key

  1. 90
  2. 80
  3. 4.4
  4. 5
  5. 79
  6. 6
  7. 21
  8. 12
  9. 66
  10. 145
  11. 4.5
  12. 7.5
  13. 3.7
  14. 16
  15. 2.5
  16. 2.6
  17. 102
  18. 45
  19. 81
  20. 20
  21. 34
  22. 64.5
  23. 6
  24. 3.2
  25. 165
  26. 5
  27. 10
  28. 71
  29. 4.6
  30. 62.5
  31. 85
  32. 7.9
  33. 39
  34. 34
  35. 4.5
  36. 7
  37. 70
  38. 66
  39. 42
  40. 28.5

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