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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 535 · 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 750 =
  2. 2.10% of 390 =
  3. 3.10% of 290 =
  4. 4.15% of 610 =
  5. 5.1% of 540 =
  6. 6.15% of 170 =
  7. 7.10% of 570 =
  8. 8.5% of 100 =
  9. 9.15% of 400 =
  10. 10.10% of 60 =
  11. 11.50% of 140 =
  12. 12.25% of 640 =
  13. 13.5% of 710 =
  14. 14.5% of 760 =
  15. 15.15% of 890 =
  16. 16.15% of 230 =
  17. 17.10% of 900 =
  18. 18.20% of 320 =
  19. 19.1% of 680 =
  20. 20.50% of 800 =
  21. 21.50% of 630 =
  22. 22.15% of 490 =
  23. 23.10% of 390 =
  24. 24.50% of 100 =
  25. 25.10% of 280 =
  26. 26.50% of 610 =
  27. 27.5% of 820 =
  28. 28.15% of 240 =
  29. 29.5% of 270 =
  30. 30.1% of 730 =
  31. 31.5% of 630 =
  32. 32.50% of 290 =
  33. 33.50% of 120 =
  34. 34.15% of 870 =
  35. 35.50% of 710 =
  36. 36.20% of 640 =
  37. 37.1% of 890 =
  38. 38.15% of 680 =
  39. 39.10% of 680 =
  40. 40.15% of 180 =

Answer key

  1. 75
  2. 39
  3. 29
  4. 91.5
  5. 5.4
  6. 25.5
  7. 57
  8. 5
  9. 60
  10. 6
  11. 70
  12. 160
  13. 35.5
  14. 38
  15. 133.5
  16. 34.5
  17. 90
  18. 64
  19. 6.8
  20. 400
  21. 315
  22. 73.5
  23. 39
  24. 50
  25. 28
  26. 305
  27. 41
  28. 36
  29. 13.5
  30. 7.3
  31. 31.5
  32. 145
  33. 60
  34. 130.5
  35. 355
  36. 128
  37. 8.9
  38. 102
  39. 68
  40. 27

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