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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 110 · 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 210 =
  2. 2.15% of 660 =
  3. 3.20% of 810 =
  4. 4.5% of 180 =
  5. 5.50% of 230 =
  6. 6.25% of 150 =
  7. 7.50% of 880 =
  8. 8.15% of 330 =
  9. 9.10% of 130 =
  10. 10.1% of 790 =
  11. 11.5% of 900 =
  12. 12.20% of 460 =
  13. 13.1% of 850 =
  14. 14.5% of 190 =
  15. 15.5% of 890 =
  16. 16.1% of 850 =
  17. 17.1% of 660 =
  18. 18.10% of 520 =
  19. 19.20% of 60 =
  20. 20.10% of 900 =
  21. 21.50% of 190 =
  22. 22.50% of 770 =
  23. 23.1% of 840 =
  24. 24.50% of 210 =
  25. 25.50% of 850 =
  26. 26.10% of 120 =
  27. 27.20% of 880 =
  28. 28.1% of 780 =
  29. 29.50% of 380 =
  30. 30.20% of 190 =
  31. 31.25% of 820 =
  32. 32.1% of 260 =
  33. 33.25% of 350 =
  34. 34.5% of 80 =
  35. 35.1% of 300 =
  36. 36.15% of 530 =
  37. 37.10% of 790 =
  38. 38.20% of 490 =
  39. 39.10% of 120 =
  40. 40.10% of 380 =

Answer key

  1. 2.1
  2. 99
  3. 162
  4. 9
  5. 115
  6. 37.5
  7. 440
  8. 49.5
  9. 13
  10. 7.9
  11. 45
  12. 92
  13. 8.5
  14. 9.5
  15. 44.5
  16. 8.5
  17. 6.6
  18. 52
  19. 12
  20. 90
  21. 95
  22. 385
  23. 8.4
  24. 105
  25. 425
  26. 12
  27. 176
  28. 7.8
  29. 190
  30. 38
  31. 205
  32. 2.6
  33. 87.5
  34. 4
  35. 3
  36. 79.5
  37. 79
  38. 98
  39. 12
  40. 38

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