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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 285 · 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 260 =
  2. 2.1% of 420 =
  3. 3.5% of 330 =
  4. 4.10% of 330 =
  5. 5.1% of 430 =
  6. 6.15% of 800 =
  7. 7.15% of 510 =
  8. 8.25% of 640 =
  9. 9.25% of 580 =
  10. 10.15% of 580 =
  11. 11.10% of 330 =
  12. 12.1% of 500 =
  13. 13.50% of 380 =
  14. 14.5% of 830 =
  15. 15.25% of 160 =
  16. 16.25% of 740 =
  17. 17.20% of 150 =
  18. 18.5% of 530 =
  19. 19.15% of 80 =
  20. 20.10% of 70 =
  21. 21.5% of 610 =
  22. 22.50% of 600 =
  23. 23.5% of 720 =
  24. 24.1% of 70 =
  25. 25.20% of 690 =
  26. 26.1% of 550 =
  27. 27.1% of 790 =
  28. 28.1% of 120 =
  29. 29.10% of 40 =
  30. 30.10% of 120 =
  31. 31.50% of 330 =
  32. 32.10% of 570 =
  33. 33.5% of 350 =
  34. 34.5% of 110 =
  35. 35.10% of 110 =
  36. 36.50% of 460 =
  37. 37.20% of 30 =
  38. 38.25% of 360 =
  39. 39.10% of 690 =
  40. 40.10% of 580 =

Answer key

  1. 39
  2. 4.2
  3. 16.5
  4. 33
  5. 4.3
  6. 120
  7. 76.5
  8. 160
  9. 145
  10. 87
  11. 33
  12. 5
  13. 190
  14. 41.5
  15. 40
  16. 185
  17. 30
  18. 26.5
  19. 12
  20. 7
  21. 30.5
  22. 300
  23. 36
  24. 0.7
  25. 138
  26. 5.5
  27. 7.9
  28. 1.2
  29. 4
  30. 12
  31. 165
  32. 57
  33. 17.5
  34. 5.5
  35. 11
  36. 230
  37. 6
  38. 90
  39. 69
  40. 58

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