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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 428 · 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. 1.20% of 690 =
  2. 2.15% of 430 =
  3. 3.25% of 390 =
  4. 4.1% of 80 =
  5. 5.20% of 30 =
  6. 6.20% of 270 =
  7. 7.20% of 560 =
  8. 8.1% of 730 =
  9. 9.15% of 590 =
  10. 10.15% of 730 =
  11. 11.5% of 440 =
  12. 12.50% of 150 =
  13. 13.25% of 40 =
  14. 14.5% of 880 =
  15. 15.20% of 250 =
  16. 16.5% of 730 =
  17. 17.20% of 260 =
  18. 18.5% of 860 =
  19. 19.1% of 150 =
  20. 20.25% of 310 =
  21. 21.15% of 860 =
  22. 22.20% of 160 =
  23. 23.5% of 500 =
  24. 24.50% of 780 =
  25. 25.10% of 760 =
  26. 26.5% of 830 =
  27. 27.10% of 270 =
  28. 28.20% of 360 =
  29. 29.10% of 560 =
  30. 30.5% of 410 =
  31. 31.50% of 710 =
  32. 32.20% of 210 =
  33. 33.20% of 100 =
  34. 34.25% of 170 =
  35. 35.25% of 420 =
  36. 36.10% of 350 =
  37. 37.5% of 470 =
  38. 38.50% of 770 =
  39. 39.1% of 30 =
  40. 40.1% of 760 =

Answer key

  1. 138
  2. 64.5
  3. 97.5
  4. 0.8
  5. 6
  6. 54
  7. 112
  8. 7.3
  9. 88.5
  10. 109.5
  11. 22
  12. 75
  13. 10
  14. 44
  15. 50
  16. 36.5
  17. 52
  18. 43
  19. 1.5
  20. 77.5
  21. 129
  22. 32
  23. 25
  24. 390
  25. 76
  26. 41.5
  27. 27
  28. 72
  29. 56
  30. 20.5
  31. 355
  32. 42
  33. 20
  34. 42.5
  35. 105
  36. 35
  37. 23.5
  38. 385
  39. 0.3
  40. 7.6

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