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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 993 · 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 540 =
  2. 2.50% of 850 =
  3. 3.20% of 230 =
  4. 4.20% of 240 =
  5. 5.50% of 230 =
  6. 6.5% of 250 =
  7. 7.1% of 890 =
  8. 8.10% of 470 =
  9. 9.10% of 810 =
  10. 10.5% of 620 =
  11. 11.10% of 540 =
  12. 12.25% of 760 =
  13. 13.25% of 700 =
  14. 14.1% of 320 =
  15. 15.1% of 160 =
  16. 16.15% of 540 =
  17. 17.50% of 140 =
  18. 18.5% of 710 =
  19. 19.50% of 690 =
  20. 20.10% of 70 =
  21. 21.5% of 480 =
  22. 22.20% of 510 =
  23. 23.5% of 220 =
  24. 24.25% of 20 =
  25. 25.25% of 70 =
  26. 26.50% of 70 =
  27. 27.20% of 790 =
  28. 28.50% of 250 =
  29. 29.25% of 690 =
  30. 30.50% of 50 =
  31. 31.20% of 50 =
  32. 32.50% of 260 =
  33. 33.5% of 240 =
  34. 34.15% of 130 =
  35. 35.5% of 140 =
  36. 36.25% of 610 =
  37. 37.10% of 130 =
  38. 38.25% of 560 =
  39. 39.1% of 250 =
  40. 40.1% of 300 =

Answer key

  1. 27
  2. 425
  3. 46
  4. 48
  5. 115
  6. 12.5
  7. 8.9
  8. 47
  9. 81
  10. 31
  11. 54
  12. 190
  13. 175
  14. 3.2
  15. 1.6
  16. 81
  17. 70
  18. 35.5
  19. 345
  20. 7
  21. 24
  22. 102
  23. 11
  24. 5
  25. 17.5
  26. 35
  27. 158
  28. 125
  29. 172.5
  30. 25
  31. 10
  32. 130
  33. 12
  34. 19.5
  35. 7
  36. 152.5
  37. 13
  38. 140
  39. 2.5
  40. 3

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