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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 538 · 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 410 =
  2. 2.25% of 630 =
  3. 3.10% of 780 =
  4. 4.20% of 600 =
  5. 5.50% of 650 =
  6. 6.5% of 620 =
  7. 7.50% of 80 =
  8. 8.10% of 60 =
  9. 9.25% of 300 =
  10. 10.10% of 560 =
  11. 11.5% of 230 =
  12. 12.25% of 250 =
  13. 13.50% of 600 =
  14. 14.15% of 730 =
  15. 15.1% of 360 =
  16. 16.15% of 780 =
  17. 17.5% of 230 =
  18. 18.5% of 640 =
  19. 19.10% of 50 =
  20. 20.50% of 670 =
  21. 21.1% of 30 =
  22. 22.10% of 130 =
  23. 23.5% of 640 =
  24. 24.15% of 140 =
  25. 25.5% of 200 =
  26. 26.25% of 400 =
  27. 27.25% of 580 =
  28. 28.25% of 300 =
  29. 29.50% of 440 =
  30. 30.1% of 550 =
  31. 31.20% of 530 =
  32. 32.15% of 30 =
  33. 33.50% of 410 =
  34. 34.50% of 750 =
  35. 35.10% of 550 =
  36. 36.20% of 610 =
  37. 37.25% of 50 =
  38. 38.20% of 340 =
  39. 39.50% of 710 =
  40. 40.25% of 240 =

Answer key

  1. 4.1
  2. 157.5
  3. 78
  4. 120
  5. 325
  6. 31
  7. 40
  8. 6
  9. 75
  10. 56
  11. 11.5
  12. 62.5
  13. 300
  14. 109.5
  15. 3.6
  16. 117
  17. 11.5
  18. 32
  19. 5
  20. 335
  21. 0.3
  22. 13
  23. 32
  24. 21
  25. 10
  26. 100
  27. 145
  28. 75
  29. 220
  30. 5.5
  31. 106
  32. 4.5
  33. 205
  34. 375
  35. 55
  36. 122
  37. 12.5
  38. 68
  39. 355
  40. 60

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