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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 51 · 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. 1.5% of 120 =
  2. 2.20% of 260 =
  3. 3.15% of 480 =
  4. 4.1% of 210 =
  5. 5.1% of 700 =
  6. 6.1% of 600 =
  7. 7.5% of 230 =
  8. 8.25% of 100 =
  9. 9.50% of 750 =
  10. 10.10% of 330 =
  11. 11.1% of 660 =
  12. 12.15% of 260 =
  13. 13.50% of 300 =
  14. 14.15% of 270 =
  15. 15.50% of 580 =
  16. 16.5% of 100 =
  17. 17.5% of 90 =
  18. 18.10% of 340 =
  19. 19.1% of 220 =
  20. 20.50% of 650 =
  21. 21.10% of 850 =
  22. 22.1% of 90 =
  23. 23.20% of 130 =
  24. 24.50% of 100 =
  25. 25.5% of 820 =
  26. 26.5% of 500 =
  27. 27.25% of 540 =
  28. 28.5% of 480 =
  29. 29.20% of 150 =
  30. 30.50% of 230 =
  31. 31.5% of 430 =
  32. 32.20% of 230 =
  33. 33.5% of 460 =
  34. 34.25% of 30 =
  35. 35.10% of 810 =
  36. 36.1% of 130 =
  37. 37.25% of 430 =
  38. 38.15% of 380 =
  39. 39.1% of 160 =
  40. 40.1% of 280 =

Answer key

  1. 6
  2. 52
  3. 72
  4. 2.1
  5. 7
  6. 6
  7. 11.5
  8. 25
  9. 375
  10. 33
  11. 6.6
  12. 39
  13. 150
  14. 40.5
  15. 290
  16. 5
  17. 4.5
  18. 34
  19. 2.2
  20. 325
  21. 85
  22. 0.9
  23. 26
  24. 50
  25. 41
  26. 25
  27. 135
  28. 24
  29. 30
  30. 115
  31. 21.5
  32. 46
  33. 23
  34. 7.5
  35. 81
  36. 1.3
  37. 107.5
  38. 57
  39. 1.6
  40. 2.8

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