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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 972 · 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 510 =
  2. 2.1% of 650 =
  3. 3.25% of 780 =
  4. 4.50% of 90 =
  5. 5.50% of 830 =
  6. 6.25% of 900 =
  7. 7.15% of 310 =
  8. 8.15% of 70 =
  9. 9.50% of 390 =
  10. 10.50% of 740 =
  11. 11.10% of 860 =
  12. 12.1% of 840 =
  13. 13.25% of 390 =
  14. 14.50% of 180 =
  15. 15.5% of 60 =
  16. 16.20% of 510 =
  17. 17.25% of 720 =
  18. 18.25% of 610 =
  19. 19.1% of 190 =
  20. 20.10% of 230 =
  21. 21.50% of 50 =
  22. 22.50% of 70 =
  23. 23.50% of 460 =
  24. 24.5% of 550 =
  25. 25.10% of 20 =
  26. 26.15% of 240 =
  27. 27.20% of 440 =
  28. 28.20% of 520 =
  29. 29.25% of 420 =
  30. 30.50% of 290 =
  31. 31.10% of 630 =
  32. 32.50% of 110 =
  33. 33.5% of 100 =
  34. 34.50% of 760 =
  35. 35.5% of 490 =
  36. 36.5% of 730 =
  37. 37.10% of 650 =
  38. 38.20% of 110 =
  39. 39.10% of 770 =
  40. 40.1% of 220 =

Answer key

  1. 51
  2. 6.5
  3. 195
  4. 45
  5. 415
  6. 225
  7. 46.5
  8. 10.5
  9. 195
  10. 370
  11. 86
  12. 8.4
  13. 97.5
  14. 90
  15. 3
  16. 102
  17. 180
  18. 152.5
  19. 1.9
  20. 23
  21. 25
  22. 35
  23. 230
  24. 27.5
  25. 2
  26. 36
  27. 88
  28. 104
  29. 105
  30. 145
  31. 63
  32. 55
  33. 5
  34. 380
  35. 24.5
  36. 36.5
  37. 65
  38. 22
  39. 77
  40. 2.2

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