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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 705 · 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 150 =
  2. 2.50% of 540 =
  3. 3.1% of 420 =
  4. 4.5% of 790 =
  5. 5.1% of 290 =
  6. 6.5% of 560 =
  7. 7.1% of 460 =
  8. 8.15% of 150 =
  9. 9.10% of 150 =
  10. 10.5% of 270 =
  11. 11.20% of 510 =
  12. 12.20% of 870 =
  13. 13.1% of 850 =
  14. 14.1% of 220 =
  15. 15.5% of 790 =
  16. 16.50% of 710 =
  17. 17.15% of 430 =
  18. 18.10% of 20 =
  19. 19.20% of 60 =
  20. 20.25% of 160 =
  21. 21.10% of 500 =
  22. 22.25% of 100 =
  23. 23.10% of 110 =
  24. 24.10% of 320 =
  25. 25.15% of 880 =
  26. 26.25% of 370 =
  27. 27.1% of 900 =
  28. 28.20% of 60 =
  29. 29.50% of 440 =
  30. 30.1% of 280 =
  31. 31.10% of 750 =
  32. 32.5% of 710 =
  33. 33.50% of 900 =
  34. 34.10% of 600 =
  35. 35.5% of 570 =
  36. 36.10% of 850 =
  37. 37.50% of 890 =
  38. 38.50% of 140 =
  39. 39.50% of 300 =
  40. 40.1% of 890 =

Answer key

  1. 7.5
  2. 270
  3. 4.2
  4. 39.5
  5. 2.9
  6. 28
  7. 4.6
  8. 22.5
  9. 15
  10. 13.5
  11. 102
  12. 174
  13. 8.5
  14. 2.2
  15. 39.5
  16. 355
  17. 64.5
  18. 2
  19. 12
  20. 40
  21. 50
  22. 25
  23. 11
  24. 32
  25. 132
  26. 92.5
  27. 9
  28. 12
  29. 220
  30. 2.8
  31. 75
  32. 35.5
  33. 450
  34. 60
  35. 28.5
  36. 85
  37. 445
  38. 70
  39. 150
  40. 8.9

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