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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 231 · 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 640 =
  2. 2.1% of 140 =
  3. 3.1% of 320 =
  4. 4.15% of 100 =
  5. 5.15% of 90 =
  6. 6.20% of 410 =
  7. 7.15% of 160 =
  8. 8.10% of 60 =
  9. 9.10% of 320 =
  10. 10.25% of 30 =
  11. 11.10% of 320 =
  12. 12.20% of 120 =
  13. 13.25% of 670 =
  14. 14.25% of 370 =
  15. 15.10% of 610 =
  16. 16.10% of 870 =
  17. 17.10% of 520 =
  18. 18.20% of 510 =
  19. 19.10% of 280 =
  20. 20.25% of 570 =
  21. 21.10% of 260 =
  22. 22.10% of 110 =
  23. 23.25% of 660 =
  24. 24.50% of 300 =
  25. 25.25% of 670 =
  26. 26.1% of 270 =
  27. 27.20% of 440 =
  28. 28.1% of 760 =
  29. 29.1% of 650 =
  30. 30.25% of 600 =
  31. 31.5% of 640 =
  32. 32.50% of 610 =
  33. 33.15% of 870 =
  34. 34.10% of 260 =
  35. 35.15% of 100 =
  36. 36.5% of 840 =
  37. 37.1% of 460 =
  38. 38.1% of 60 =
  39. 39.20% of 840 =
  40. 40.50% of 430 =

Answer key

  1. 6.4
  2. 1.4
  3. 3.2
  4. 15
  5. 13.5
  6. 82
  7. 24
  8. 6
  9. 32
  10. 7.5
  11. 32
  12. 24
  13. 167.5
  14. 92.5
  15. 61
  16. 87
  17. 52
  18. 102
  19. 28
  20. 142.5
  21. 26
  22. 11
  23. 165
  24. 150
  25. 167.5
  26. 2.7
  27. 88
  28. 7.6
  29. 6.5
  30. 150
  31. 32
  32. 305
  33. 130.5
  34. 26
  35. 15
  36. 42
  37. 4.6
  38. 0.6
  39. 168
  40. 215

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