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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 253 · 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 40 =
  2. 2.1% of 850 =
  3. 3.25% of 750 =
  4. 4.10% of 40 =
  5. 5.10% of 230 =
  6. 6.1% of 500 =
  7. 7.50% of 180 =
  8. 8.10% of 710 =
  9. 9.5% of 610 =
  10. 10.15% of 380 =
  11. 11.20% of 210 =
  12. 12.50% of 610 =
  13. 13.5% of 840 =
  14. 14.15% of 170 =
  15. 15.1% of 420 =
  16. 16.50% of 740 =
  17. 17.10% of 850 =
  18. 18.10% of 750 =
  19. 19.1% of 450 =
  20. 20.10% of 60 =
  21. 21.15% of 150 =
  22. 22.25% of 290 =
  23. 23.10% of 750 =
  24. 24.1% of 550 =
  25. 25.5% of 650 =
  26. 26.5% of 860 =
  27. 27.25% of 260 =
  28. 28.20% of 190 =
  29. 29.20% of 770 =
  30. 30.20% of 570 =
  31. 31.5% of 40 =
  32. 32.5% of 340 =
  33. 33.20% of 160 =
  34. 34.15% of 180 =
  35. 35.20% of 60 =
  36. 36.50% of 420 =
  37. 37.10% of 690 =
  38. 38.10% of 720 =
  39. 39.25% of 900 =
  40. 40.50% of 690 =

Answer key

  1. 0.4
  2. 8.5
  3. 187.5
  4. 4
  5. 23
  6. 5
  7. 90
  8. 71
  9. 30.5
  10. 57
  11. 42
  12. 305
  13. 42
  14. 25.5
  15. 4.2
  16. 370
  17. 85
  18. 75
  19. 4.5
  20. 6
  21. 22.5
  22. 72.5
  23. 75
  24. 5.5
  25. 32.5
  26. 43
  27. 65
  28. 38
  29. 154
  30. 114
  31. 2
  32. 17
  33. 32
  34. 27
  35. 12
  36. 210
  37. 69
  38. 72
  39. 225
  40. 345

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