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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 522 · 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. 1.10% of 100 =
  2. 2.1% of 760 =
  3. 3.10% of 390 =
  4. 4.20% of 790 =
  5. 5.10% of 450 =
  6. 6.50% of 150 =
  7. 7.10% of 40 =
  8. 8.50% of 460 =
  9. 9.25% of 90 =
  10. 10.10% of 310 =
  11. 11.50% of 870 =
  12. 12.20% of 130 =
  13. 13.10% of 560 =
  14. 14.5% of 520 =
  15. 15.25% of 150 =
  16. 16.5% of 640 =
  17. 17.10% of 380 =
  18. 18.15% of 600 =
  19. 19.10% of 620 =
  20. 20.20% of 620 =
  21. 21.5% of 870 =
  22. 22.25% of 60 =
  23. 23.50% of 280 =
  24. 24.25% of 330 =
  25. 25.50% of 860 =
  26. 26.25% of 280 =
  27. 27.15% of 580 =
  28. 28.5% of 360 =
  29. 29.5% of 480 =
  30. 30.20% of 890 =
  31. 31.5% of 370 =
  32. 32.25% of 750 =
  33. 33.5% of 90 =
  34. 34.10% of 390 =
  35. 35.10% of 390 =
  36. 36.25% of 690 =
  37. 37.20% of 460 =
  38. 38.20% of 740 =
  39. 39.5% of 410 =
  40. 40.1% of 150 =

Answer key

  1. 10
  2. 7.6
  3. 39
  4. 158
  5. 45
  6. 75
  7. 4
  8. 230
  9. 22.5
  10. 31
  11. 435
  12. 26
  13. 56
  14. 26
  15. 37.5
  16. 32
  17. 38
  18. 90
  19. 62
  20. 124
  21. 43.5
  22. 15
  23. 140
  24. 82.5
  25. 430
  26. 70
  27. 87
  28. 18
  29. 24
  30. 178
  31. 18.5
  32. 187.5
  33. 4.5
  34. 39
  35. 39
  36. 172.5
  37. 92
  38. 148
  39. 20.5
  40. 1.5

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