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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 77 · 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. 1.1% of 200 =
  2. 2.5% of 410 =
  3. 3.50% of 50 =
  4. 4.50% of 570 =
  5. 5.1% of 570 =
  6. 6.1% of 560 =
  7. 7.1% of 740 =
  8. 8.5% of 600 =
  9. 9.1% of 690 =
  10. 10.20% of 70 =
  11. 11.50% of 220 =
  12. 12.10% of 750 =
  13. 13.50% of 250 =
  14. 14.10% of 190 =
  15. 15.50% of 760 =
  16. 16.25% of 420 =
  17. 17.50% of 640 =
  18. 18.50% of 300 =
  19. 19.20% of 160 =
  20. 20.10% of 580 =
  21. 21.15% of 760 =
  22. 22.15% of 900 =
  23. 23.10% of 230 =
  24. 24.10% of 870 =
  25. 25.50% of 50 =
  26. 26.20% of 280 =
  27. 27.20% of 290 =
  28. 28.25% of 120 =
  29. 29.10% of 480 =
  30. 30.20% of 350 =
  31. 31.20% of 530 =
  32. 32.25% of 880 =
  33. 33.50% of 370 =
  34. 34.10% of 380 =
  35. 35.20% of 610 =
  36. 36.25% of 900 =
  37. 37.1% of 150 =
  38. 38.10% of 560 =
  39. 39.10% of 170 =
  40. 40.1% of 600 =

Answer key

  1. 2
  2. 20.5
  3. 25
  4. 285
  5. 5.7
  6. 5.6
  7. 7.4
  8. 30
  9. 6.9
  10. 14
  11. 110
  12. 75
  13. 125
  14. 19
  15. 380
  16. 105
  17. 320
  18. 150
  19. 32
  20. 58
  21. 114
  22. 135
  23. 23
  24. 87
  25. 25
  26. 56
  27. 58
  28. 30
  29. 48
  30. 70
  31. 106
  32. 220
  33. 185
  34. 38
  35. 122
  36. 225
  37. 1.5
  38. 56
  39. 17
  40. 6

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