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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 948 · 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 560 =
  2. 2.15% of 20 =
  3. 3.5% of 390 =
  4. 4.25% of 120 =
  5. 5.10% of 680 =
  6. 6.50% of 860 =
  7. 7.5% of 390 =
  8. 8.10% of 760 =
  9. 9.15% of 180 =
  10. 10.25% of 420 =
  11. 11.10% of 470 =
  12. 12.10% of 810 =
  13. 13.15% of 590 =
  14. 14.50% of 390 =
  15. 15.10% of 450 =
  16. 16.25% of 120 =
  17. 17.10% of 510 =
  18. 18.25% of 320 =
  19. 19.5% of 400 =
  20. 20.15% of 670 =
  21. 21.5% of 770 =
  22. 22.15% of 220 =
  23. 23.50% of 160 =
  24. 24.10% of 770 =
  25. 25.5% of 640 =
  26. 26.25% of 880 =
  27. 27.5% of 100 =
  28. 28.25% of 90 =
  29. 29.15% of 260 =
  30. 30.5% of 140 =
  31. 31.25% of 530 =
  32. 32.15% of 640 =
  33. 33.50% of 400 =
  34. 34.15% of 240 =
  35. 35.25% of 320 =
  36. 36.15% of 750 =
  37. 37.20% of 810 =
  38. 38.25% of 230 =
  39. 39.1% of 100 =
  40. 40.20% of 190 =

Answer key

  1. 28
  2. 3
  3. 19.5
  4. 30
  5. 68
  6. 430
  7. 19.5
  8. 76
  9. 27
  10. 105
  11. 47
  12. 81
  13. 88.5
  14. 195
  15. 45
  16. 30
  17. 51
  18. 80
  19. 20
  20. 100.5
  21. 38.5
  22. 33
  23. 80
  24. 77
  25. 32
  26. 220
  27. 5
  28. 22.5
  29. 39
  30. 7
  31. 132.5
  32. 96
  33. 200
  34. 36
  35. 80
  36. 112.5
  37. 162
  38. 57.5
  39. 1
  40. 38

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