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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 643 · 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 130 =
  2. 2.5% of 540 =
  3. 3.1% of 290 =
  4. 4.1% of 200 =
  5. 5.20% of 450 =
  6. 6.10% of 690 =
  7. 7.50% of 660 =
  8. 8.15% of 170 =
  9. 9.50% of 470 =
  10. 10.50% of 230 =
  11. 11.50% of 290 =
  12. 12.25% of 140 =
  13. 13.1% of 700 =
  14. 14.15% of 90 =
  15. 15.5% of 790 =
  16. 16.20% of 330 =
  17. 17.15% of 310 =
  18. 18.1% of 400 =
  19. 19.25% of 860 =
  20. 20.25% of 150 =
  21. 21.20% of 850 =
  22. 22.10% of 40 =
  23. 23.10% of 240 =
  24. 24.25% of 270 =
  25. 25.15% of 870 =
  26. 26.5% of 110 =
  27. 27.20% of 40 =
  28. 28.5% of 320 =
  29. 29.10% of 900 =
  30. 30.10% of 140 =
  31. 31.15% of 360 =
  32. 32.20% of 700 =
  33. 33.20% of 310 =
  34. 34.25% of 20 =
  35. 35.5% of 700 =
  36. 36.20% of 490 =
  37. 37.50% of 770 =
  38. 38.1% of 730 =
  39. 39.15% of 420 =
  40. 40.1% of 750 =

Answer key

  1. 13
  2. 27
  3. 2.9
  4. 2
  5. 90
  6. 69
  7. 330
  8. 25.5
  9. 235
  10. 115
  11. 145
  12. 35
  13. 7
  14. 13.5
  15. 39.5
  16. 66
  17. 46.5
  18. 4
  19. 215
  20. 37.5
  21. 170
  22. 4
  23. 24
  24. 67.5
  25. 130.5
  26. 5.5
  27. 8
  28. 16
  29. 90
  30. 14
  31. 54
  32. 140
  33. 62
  34. 5
  35. 35
  36. 98
  37. 385
  38. 7.3
  39. 63
  40. 7.5

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