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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 221 · 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. 1.50% of 90 =
  2. 2.15% of 690 =
  3. 3.5% of 900 =
  4. 4.25% of 660 =
  5. 5.20% of 410 =
  6. 6.50% of 820 =
  7. 7.50% of 410 =
  8. 8.15% of 500 =
  9. 9.15% of 80 =
  10. 10.1% of 620 =
  11. 11.10% of 640 =
  12. 12.15% of 790 =
  13. 13.50% of 870 =
  14. 14.5% of 470 =
  15. 15.25% of 410 =
  16. 16.15% of 320 =
  17. 17.20% of 500 =
  18. 18.10% of 70 =
  19. 19.25% of 840 =
  20. 20.15% of 840 =
  21. 21.1% of 900 =
  22. 22.20% of 380 =
  23. 23.20% of 820 =
  24. 24.15% of 560 =
  25. 25.20% of 840 =
  26. 26.5% of 140 =
  27. 27.15% of 590 =
  28. 28.15% of 780 =
  29. 29.10% of 190 =
  30. 30.25% of 140 =
  31. 31.10% of 810 =
  32. 32.10% of 780 =
  33. 33.15% of 320 =
  34. 34.50% of 760 =
  35. 35.50% of 250 =
  36. 36.10% of 200 =
  37. 37.5% of 660 =
  38. 38.10% of 690 =
  39. 39.5% of 700 =
  40. 40.1% of 550 =

Answer key

  1. 45
  2. 103.5
  3. 45
  4. 165
  5. 82
  6. 410
  7. 205
  8. 75
  9. 12
  10. 6.2
  11. 64
  12. 118.5
  13. 435
  14. 23.5
  15. 102.5
  16. 48
  17. 100
  18. 7
  19. 210
  20. 126
  21. 9
  22. 76
  23. 164
  24. 84
  25. 168
  26. 7
  27. 88.5
  28. 117
  29. 19
  30. 35
  31. 81
  32. 78
  33. 48
  34. 380
  35. 125
  36. 20
  37. 33
  38. 69
  39. 35
  40. 5.5

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