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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 953 · 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. 1.1% of 880 =
  2. 2.10% of 830 =
  3. 3.1% of 340 =
  4. 4.15% of 230 =
  5. 5.25% of 60 =
  6. 6.10% of 680 =
  7. 7.50% of 750 =
  8. 8.50% of 710 =
  9. 9.25% of 760 =
  10. 10.1% of 760 =
  11. 11.1% of 380 =
  12. 12.20% of 190 =
  13. 13.15% of 490 =
  14. 14.15% of 600 =
  15. 15.50% of 720 =
  16. 16.15% of 130 =
  17. 17.5% of 730 =
  18. 18.1% of 380 =
  19. 19.5% of 710 =
  20. 20.5% of 240 =
  21. 21.5% of 310 =
  22. 22.1% of 520 =
  23. 23.5% of 20 =
  24. 24.10% of 260 =
  25. 25.50% of 520 =
  26. 26.25% of 650 =
  27. 27.15% of 400 =
  28. 28.50% of 470 =
  29. 29.10% of 170 =
  30. 30.20% of 510 =
  31. 31.50% of 570 =
  32. 32.1% of 180 =
  33. 33.15% of 730 =
  34. 34.1% of 890 =
  35. 35.20% of 290 =
  36. 36.20% of 430 =
  37. 37.10% of 130 =
  38. 38.10% of 690 =
  39. 39.20% of 580 =
  40. 40.20% of 60 =

Answer key

  1. 8.8
  2. 83
  3. 3.4
  4. 34.5
  5. 15
  6. 68
  7. 375
  8. 355
  9. 190
  10. 7.6
  11. 3.8
  12. 38
  13. 73.5
  14. 90
  15. 360
  16. 19.5
  17. 36.5
  18. 3.8
  19. 35.5
  20. 12
  21. 15.5
  22. 5.2
  23. 1
  24. 26
  25. 260
  26. 162.5
  27. 60
  28. 235
  29. 17
  30. 102
  31. 285
  32. 1.8
  33. 109.5
  34. 8.9
  35. 58
  36. 86
  37. 13
  38. 69
  39. 116
  40. 12

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