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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 929 · 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. 1.15% of 730 =
  2. 2.50% of 320 =
  3. 3.5% of 530 =
  4. 4.10% of 450 =
  5. 5.10% of 150 =
  6. 6.25% of 380 =
  7. 7.1% of 30 =
  8. 8.5% of 100 =
  9. 9.10% of 740 =
  10. 10.20% of 80 =
  11. 11.25% of 800 =
  12. 12.25% of 880 =
  13. 13.10% of 680 =
  14. 14.1% of 440 =
  15. 15.15% of 300 =
  16. 16.15% of 430 =
  17. 17.10% of 30 =
  18. 18.10% of 170 =
  19. 19.20% of 80 =
  20. 20.15% of 320 =
  21. 21.5% of 20 =
  22. 22.1% of 280 =
  23. 23.25% of 710 =
  24. 24.15% of 840 =
  25. 25.5% of 300 =
  26. 26.20% of 50 =
  27. 27.10% of 740 =
  28. 28.1% of 890 =
  29. 29.15% of 130 =
  30. 30.10% of 70 =
  31. 31.25% of 110 =
  32. 32.50% of 880 =
  33. 33.20% of 510 =
  34. 34.20% of 60 =
  35. 35.1% of 50 =
  36. 36.10% of 560 =
  37. 37.10% of 90 =
  38. 38.20% of 290 =
  39. 39.15% of 500 =
  40. 40.25% of 710 =

Answer key

  1. 109.5
  2. 160
  3. 26.5
  4. 45
  5. 15
  6. 95
  7. 0.3
  8. 5
  9. 74
  10. 16
  11. 200
  12. 220
  13. 68
  14. 4.4
  15. 45
  16. 64.5
  17. 3
  18. 17
  19. 16
  20. 48
  21. 1
  22. 2.8
  23. 177.5
  24. 126
  25. 15
  26. 10
  27. 74
  28. 8.9
  29. 19.5
  30. 7
  31. 27.5
  32. 440
  33. 102
  34. 12
  35. 0.5
  36. 56
  37. 9
  38. 58
  39. 75
  40. 177.5

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