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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 973 · 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. 1.5% of 120 =
  2. 2.50% of 700 =
  3. 3.15% of 140 =
  4. 4.20% of 560 =
  5. 5.5% of 250 =
  6. 6.15% of 180 =
  7. 7.5% of 380 =
  8. 8.15% of 310 =
  9. 9.15% of 650 =
  10. 10.5% of 880 =
  11. 11.25% of 340 =
  12. 12.5% of 450 =
  13. 13.20% of 130 =
  14. 14.15% of 440 =
  15. 15.10% of 710 =
  16. 16.15% of 420 =
  17. 17.20% of 170 =
  18. 18.10% of 410 =
  19. 19.15% of 60 =
  20. 20.15% of 560 =
  21. 21.5% of 130 =
  22. 22.5% of 110 =
  23. 23.15% of 210 =
  24. 24.20% of 240 =
  25. 25.1% of 600 =
  26. 26.15% of 100 =
  27. 27.10% of 70 =
  28. 28.50% of 610 =
  29. 29.5% of 820 =
  30. 30.20% of 130 =
  31. 31.50% of 890 =
  32. 32.20% of 410 =
  33. 33.5% of 440 =
  34. 34.1% of 690 =
  35. 35.25% of 500 =
  36. 36.20% of 210 =
  37. 37.15% of 390 =
  38. 38.1% of 890 =
  39. 39.10% of 620 =
  40. 40.25% of 270 =

Answer key

  1. 6
  2. 350
  3. 21
  4. 112
  5. 12.5
  6. 27
  7. 19
  8. 46.5
  9. 97.5
  10. 44
  11. 85
  12. 22.5
  13. 26
  14. 66
  15. 71
  16. 63
  17. 34
  18. 41
  19. 9
  20. 84
  21. 6.5
  22. 5.5
  23. 31.5
  24. 48
  25. 6
  26. 15
  27. 7
  28. 305
  29. 41
  30. 26
  31. 445
  32. 82
  33. 22
  34. 6.9
  35. 125
  36. 42
  37. 58.5
  38. 8.9
  39. 62
  40. 67.5

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