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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 84 · 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 780 =
  2. 2.50% of 790 =
  3. 3.15% of 670 =
  4. 4.25% of 240 =
  5. 5.5% of 760 =
  6. 6.20% of 180 =
  7. 7.25% of 450 =
  8. 8.15% of 30 =
  9. 9.1% of 190 =
  10. 10.10% of 80 =
  11. 11.15% of 90 =
  12. 12.15% of 80 =
  13. 13.15% of 630 =
  14. 14.50% of 710 =
  15. 15.5% of 600 =
  16. 16.25% of 60 =
  17. 17.5% of 240 =
  18. 18.10% of 620 =
  19. 19.50% of 760 =
  20. 20.10% of 60 =
  21. 21.50% of 40 =
  22. 22.10% of 310 =
  23. 23.25% of 320 =
  24. 24.5% of 380 =
  25. 25.5% of 330 =
  26. 26.50% of 130 =
  27. 27.25% of 260 =
  28. 28.25% of 530 =
  29. 29.10% of 40 =
  30. 30.1% of 590 =
  31. 31.20% of 730 =
  32. 32.15% of 70 =
  33. 33.1% of 390 =
  34. 34.5% of 420 =
  35. 35.25% of 330 =
  36. 36.10% of 210 =
  37. 37.20% of 280 =
  38. 38.1% of 90 =
  39. 39.10% of 410 =
  40. 40.20% of 140 =

Answer key

  1. 156
  2. 395
  3. 100.5
  4. 60
  5. 38
  6. 36
  7. 112.5
  8. 4.5
  9. 1.9
  10. 8
  11. 13.5
  12. 12
  13. 94.5
  14. 355
  15. 30
  16. 15
  17. 12
  18. 62
  19. 380
  20. 6
  21. 20
  22. 31
  23. 80
  24. 19
  25. 16.5
  26. 65
  27. 65
  28. 132.5
  29. 4
  30. 5.9
  31. 146
  32. 10.5
  33. 3.9
  34. 21
  35. 82.5
  36. 21
  37. 56
  38. 0.9
  39. 41
  40. 28

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