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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 760 · 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. 1.20% of 350 =
  2. 2.1% of 790 =
  3. 3.25% of 390 =
  4. 4.10% of 880 =
  5. 5.1% of 410 =
  6. 6.15% of 230 =
  7. 7.10% of 190 =
  8. 8.5% of 140 =
  9. 9.25% of 590 =
  10. 10.25% of 170 =
  11. 11.10% of 470 =
  12. 12.10% of 440 =
  13. 13.50% of 180 =
  14. 14.50% of 830 =
  15. 15.25% of 760 =
  16. 16.25% of 550 =
  17. 17.1% of 670 =
  18. 18.25% of 740 =
  19. 19.25% of 770 =
  20. 20.5% of 250 =
  21. 21.5% of 20 =
  22. 22.10% of 360 =
  23. 23.15% of 740 =
  24. 24.15% of 800 =
  25. 25.20% of 60 =
  26. 26.10% of 290 =
  27. 27.1% of 390 =
  28. 28.1% of 260 =
  29. 29.50% of 120 =
  30. 30.50% of 150 =
  31. 31.1% of 120 =
  32. 32.5% of 720 =
  33. 33.25% of 650 =
  34. 34.15% of 120 =
  35. 35.5% of 320 =
  36. 36.15% of 790 =
  37. 37.25% of 720 =
  38. 38.5% of 620 =
  39. 39.50% of 390 =
  40. 40.1% of 600 =

Answer key

  1. 70
  2. 7.9
  3. 97.5
  4. 88
  5. 4.1
  6. 34.5
  7. 19
  8. 7
  9. 147.5
  10. 42.5
  11. 47
  12. 44
  13. 90
  14. 415
  15. 190
  16. 137.5
  17. 6.7
  18. 185
  19. 192.5
  20. 12.5
  21. 1
  22. 36
  23. 111
  24. 120
  25. 12
  26. 29
  27. 3.9
  28. 2.6
  29. 60
  30. 75
  31. 1.2
  32. 36
  33. 162.5
  34. 18
  35. 16
  36. 118.5
  37. 180
  38. 31
  39. 195
  40. 6

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