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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 876 · 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 70 =
  2. 2.20% of 120 =
  3. 3.5% of 870 =
  4. 4.20% of 20 =
  5. 5.1% of 100 =
  6. 6.15% of 50 =
  7. 7.10% of 290 =
  8. 8.20% of 550 =
  9. 9.50% of 400 =
  10. 10.20% of 110 =
  11. 11.25% of 690 =
  12. 12.50% of 530 =
  13. 13.20% of 210 =
  14. 14.25% of 880 =
  15. 15.25% of 810 =
  16. 16.50% of 720 =
  17. 17.10% of 870 =
  18. 18.50% of 190 =
  19. 19.5% of 900 =
  20. 20.1% of 640 =
  21. 21.1% of 660 =
  22. 22.50% of 680 =
  23. 23.1% of 30 =
  24. 24.1% of 380 =
  25. 25.50% of 890 =
  26. 26.20% of 500 =
  27. 27.20% of 770 =
  28. 28.5% of 140 =
  29. 29.20% of 880 =
  30. 30.5% of 800 =
  31. 31.20% of 460 =
  32. 32.5% of 130 =
  33. 33.1% of 190 =
  34. 34.5% of 240 =
  35. 35.10% of 720 =
  36. 36.10% of 130 =
  37. 37.10% of 200 =
  38. 38.20% of 270 =
  39. 39.15% of 240 =
  40. 40.20% of 40 =

Answer key

  1. 7
  2. 24
  3. 43.5
  4. 4
  5. 1
  6. 7.5
  7. 29
  8. 110
  9. 200
  10. 22
  11. 172.5
  12. 265
  13. 42
  14. 220
  15. 202.5
  16. 360
  17. 87
  18. 95
  19. 45
  20. 6.4
  21. 6.6
  22. 340
  23. 0.3
  24. 3.8
  25. 445
  26. 100
  27. 154
  28. 7
  29. 176
  30. 40
  31. 92
  32. 6.5
  33. 1.9
  34. 12
  35. 72
  36. 13
  37. 20
  38. 54
  39. 36
  40. 8

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