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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 468 · 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. 1.10% of 680 =
  2. 2.15% of 250 =
  3. 3.1% of 320 =
  4. 4.1% of 400 =
  5. 5.25% of 190 =
  6. 6.1% of 190 =
  7. 7.15% of 740 =
  8. 8.50% of 660 =
  9. 9.5% of 540 =
  10. 10.20% of 520 =
  11. 11.20% of 450 =
  12. 12.15% of 610 =
  13. 13.5% of 330 =
  14. 14.25% of 140 =
  15. 15.10% of 70 =
  16. 16.20% of 590 =
  17. 17.50% of 750 =
  18. 18.25% of 470 =
  19. 19.5% of 110 =
  20. 20.5% of 370 =
  21. 21.1% of 290 =
  22. 22.15% of 50 =
  23. 23.15% of 140 =
  24. 24.15% of 530 =
  25. 25.1% of 280 =
  26. 26.15% of 550 =
  27. 27.10% of 610 =
  28. 28.5% of 660 =
  29. 29.10% of 510 =
  30. 30.1% of 270 =
  31. 31.10% of 680 =
  32. 32.50% of 840 =
  33. 33.15% of 410 =
  34. 34.50% of 370 =
  35. 35.1% of 360 =
  36. 36.5% of 290 =
  37. 37.50% of 240 =
  38. 38.50% of 390 =
  39. 39.50% of 20 =
  40. 40.50% of 760 =

Answer key

  1. 68
  2. 37.5
  3. 3.2
  4. 4
  5. 47.5
  6. 1.9
  7. 111
  8. 330
  9. 27
  10. 104
  11. 90
  12. 91.5
  13. 16.5
  14. 35
  15. 7
  16. 118
  17. 375
  18. 117.5
  19. 5.5
  20. 18.5
  21. 2.9
  22. 7.5
  23. 21
  24. 79.5
  25. 2.8
  26. 82.5
  27. 61
  28. 33
  29. 51
  30. 2.7
  31. 68
  32. 420
  33. 61.5
  34. 185
  35. 3.6
  36. 14.5
  37. 120
  38. 195
  39. 10
  40. 380

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