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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 517 · 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 560 =
  2. 2.5% of 400 =
  3. 3.5% of 60 =
  4. 4.50% of 720 =
  5. 5.10% of 560 =
  6. 6.10% of 130 =
  7. 7.5% of 430 =
  8. 8.10% of 770 =
  9. 9.15% of 610 =
  10. 10.5% of 620 =
  11. 11.20% of 90 =
  12. 12.20% of 110 =
  13. 13.1% of 740 =
  14. 14.15% of 810 =
  15. 15.5% of 890 =
  16. 16.20% of 880 =
  17. 17.10% of 820 =
  18. 18.20% of 200 =
  19. 19.50% of 480 =
  20. 20.5% of 520 =
  21. 21.1% of 320 =
  22. 22.20% of 450 =
  23. 23.15% of 500 =
  24. 24.50% of 20 =
  25. 25.25% of 190 =
  26. 26.1% of 190 =
  27. 27.50% of 430 =
  28. 28.50% of 140 =
  29. 29.50% of 680 =
  30. 30.10% of 190 =
  31. 31.20% of 750 =
  32. 32.10% of 60 =
  33. 33.50% of 160 =
  34. 34.15% of 590 =
  35. 35.20% of 600 =
  36. 36.50% of 70 =
  37. 37.50% of 470 =
  38. 38.20% of 160 =
  39. 39.50% of 580 =
  40. 40.20% of 510 =

Answer key

  1. 56
  2. 20
  3. 3
  4. 360
  5. 56
  6. 13
  7. 21.5
  8. 77
  9. 91.5
  10. 31
  11. 18
  12. 22
  13. 7.4
  14. 121.5
  15. 44.5
  16. 176
  17. 82
  18. 40
  19. 240
  20. 26
  21. 3.2
  22. 90
  23. 75
  24. 10
  25. 47.5
  26. 1.9
  27. 215
  28. 70
  29. 340
  30. 19
  31. 150
  32. 6
  33. 80
  34. 88.5
  35. 120
  36. 35
  37. 235
  38. 32
  39. 290
  40. 102

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