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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 268 · 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. 1.15% of 250 =
  2. 2.20% of 440 =
  3. 3.10% of 630 =
  4. 4.10% of 620 =
  5. 5.1% of 250 =
  6. 6.50% of 840 =
  7. 7.10% of 240 =
  8. 8.20% of 490 =
  9. 9.50% of 470 =
  10. 10.5% of 680 =
  11. 11.1% of 200 =
  12. 12.10% of 40 =
  13. 13.20% of 560 =
  14. 14.10% of 60 =
  15. 15.50% of 450 =
  16. 16.15% of 250 =
  17. 17.1% of 410 =
  18. 18.25% of 720 =
  19. 19.1% of 230 =
  20. 20.50% of 540 =
  21. 21.5% of 360 =
  22. 22.20% of 420 =
  23. 23.25% of 150 =
  24. 24.5% of 250 =
  25. 25.50% of 430 =
  26. 26.1% of 410 =
  27. 27.25% of 770 =
  28. 28.1% of 590 =
  29. 29.5% of 200 =
  30. 30.10% of 860 =
  31. 31.5% of 240 =
  32. 32.10% of 150 =
  33. 33.20% of 30 =
  34. 34.10% of 60 =
  35. 35.20% of 410 =
  36. 36.50% of 650 =
  37. 37.10% of 600 =
  38. 38.20% of 550 =
  39. 39.50% of 270 =
  40. 40.10% of 410 =

Answer key

  1. 37.5
  2. 88
  3. 63
  4. 62
  5. 2.5
  6. 420
  7. 24
  8. 98
  9. 235
  10. 34
  11. 2
  12. 4
  13. 112
  14. 6
  15. 225
  16. 37.5
  17. 4.1
  18. 180
  19. 2.3
  20. 270
  21. 18
  22. 84
  23. 37.5
  24. 12.5
  25. 215
  26. 4.1
  27. 192.5
  28. 5.9
  29. 10
  30. 86
  31. 12
  32. 15
  33. 6
  34. 6
  35. 82
  36. 325
  37. 60
  38. 110
  39. 135
  40. 41

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