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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 987 · 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 580 =
  2. 2.5% of 50 =
  3. 3.15% of 500 =
  4. 4.20% of 710 =
  5. 5.10% of 340 =
  6. 6.10% of 430 =
  7. 7.10% of 670 =
  8. 8.5% of 270 =
  9. 9.10% of 610 =
  10. 10.5% of 20 =
  11. 11.50% of 750 =
  12. 12.25% of 490 =
  13. 13.5% of 880 =
  14. 14.10% of 340 =
  15. 15.25% of 270 =
  16. 16.25% of 270 =
  17. 17.5% of 570 =
  18. 18.5% of 670 =
  19. 19.10% of 700 =
  20. 20.50% of 220 =
  21. 21.25% of 190 =
  22. 22.15% of 280 =
  23. 23.10% of 260 =
  24. 24.50% of 480 =
  25. 25.5% of 200 =
  26. 26.5% of 180 =
  27. 27.25% of 760 =
  28. 28.25% of 190 =
  29. 29.20% of 250 =
  30. 30.15% of 30 =
  31. 31.5% of 860 =
  32. 32.50% of 240 =
  33. 33.5% of 620 =
  34. 34.1% of 220 =
  35. 35.5% of 550 =
  36. 36.50% of 520 =
  37. 37.50% of 400 =
  38. 38.20% of 490 =
  39. 39.20% of 610 =
  40. 40.1% of 410 =

Answer key

  1. 58
  2. 2.5
  3. 75
  4. 142
  5. 34
  6. 43
  7. 67
  8. 13.5
  9. 61
  10. 1
  11. 375
  12. 122.5
  13. 44
  14. 34
  15. 67.5
  16. 67.5
  17. 28.5
  18. 33.5
  19. 70
  20. 110
  21. 47.5
  22. 42
  23. 26
  24. 240
  25. 10
  26. 9
  27. 190
  28. 47.5
  29. 50
  30. 4.5
  31. 43
  32. 120
  33. 31
  34. 2.2
  35. 27.5
  36. 260
  37. 200
  38. 98
  39. 122
  40. 4.1

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