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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 792 · 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. 1.20% of 380 =
  2. 2.5% of 450 =
  3. 3.25% of 400 =
  4. 4.15% of 520 =
  5. 5.25% of 460 =
  6. 6.1% of 110 =
  7. 7.10% of 410 =
  8. 8.5% of 610 =
  9. 9.20% of 770 =
  10. 10.10% of 880 =
  11. 11.1% of 30 =
  12. 12.50% of 390 =
  13. 13.50% of 600 =
  14. 14.10% of 670 =
  15. 15.20% of 880 =
  16. 16.20% of 620 =
  17. 17.50% of 850 =
  18. 18.5% of 640 =
  19. 19.5% of 750 =
  20. 20.1% of 330 =
  21. 21.1% of 850 =
  22. 22.15% of 370 =
  23. 23.15% of 210 =
  24. 24.10% of 270 =
  25. 25.1% of 460 =
  26. 26.10% of 630 =
  27. 27.25% of 850 =
  28. 28.50% of 140 =
  29. 29.15% of 340 =
  30. 30.5% of 40 =
  31. 31.15% of 90 =
  32. 32.15% of 150 =
  33. 33.50% of 330 =
  34. 34.15% of 220 =
  35. 35.20% of 720 =
  36. 36.1% of 790 =
  37. 37.10% of 680 =
  38. 38.5% of 530 =
  39. 39.5% of 600 =
  40. 40.50% of 170 =

Answer key

  1. 76
  2. 22.5
  3. 100
  4. 78
  5. 115
  6. 1.1
  7. 41
  8. 30.5
  9. 154
  10. 88
  11. 0.3
  12. 195
  13. 300
  14. 67
  15. 176
  16. 124
  17. 425
  18. 32
  19. 37.5
  20. 3.3
  21. 8.5
  22. 55.5
  23. 31.5
  24. 27
  25. 4.6
  26. 63
  27. 212.5
  28. 70
  29. 51
  30. 2
  31. 13.5
  32. 22.5
  33. 165
  34. 33
  35. 144
  36. 7.9
  37. 68
  38. 26.5
  39. 30
  40. 85

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