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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 191 · 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. 2.1% of 820 =
  3. 3.1% of 400 =
  4. 4.10% of 690 =
  5. 5.50% of 510 =
  6. 6.20% of 420 =
  7. 7.5% of 720 =
  8. 8.10% of 660 =
  9. 9.15% of 610 =
  10. 10.10% of 60 =
  11. 11.15% of 770 =
  12. 12.15% of 50 =
  13. 13.5% of 760 =
  14. 14.15% of 380 =
  15. 15.10% of 260 =
  16. 16.5% of 50 =
  17. 17.15% of 880 =
  18. 18.10% of 650 =
  19. 19.15% of 230 =
  20. 20.15% of 610 =
  21. 21.15% of 540 =
  22. 22.10% of 30 =
  23. 23.50% of 880 =
  24. 24.50% of 630 =
  25. 25.1% of 230 =
  26. 26.15% of 270 =
  27. 27.15% of 550 =
  28. 28.15% of 710 =
  29. 29.1% of 900 =
  30. 30.15% of 490 =
  31. 31.5% of 520 =
  32. 32.20% of 380 =
  33. 33.50% of 100 =
  34. 34.25% of 860 =
  35. 35.20% of 590 =
  36. 36.25% of 840 =
  37. 37.20% of 220 =
  38. 38.5% of 280 =
  39. 39.5% of 740 =
  40. 40.1% of 870 =

Answer key

  1. 75
  2. 8.2
  3. 4
  4. 69
  5. 255
  6. 84
  7. 36
  8. 66
  9. 91.5
  10. 6
  11. 115.5
  12. 7.5
  13. 38
  14. 57
  15. 26
  16. 2.5
  17. 132
  18. 65
  19. 34.5
  20. 91.5
  21. 81
  22. 3
  23. 440
  24. 315
  25. 2.3
  26. 40.5
  27. 82.5
  28. 106.5
  29. 9
  30. 73.5
  31. 26
  32. 76
  33. 50
  34. 215
  35. 118
  36. 210
  37. 44
  38. 14
  39. 37
  40. 8.7

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