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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 292 · 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. 1.50% of 210 =
  2. 2.20% of 760 =
  3. 3.50% of 420 =
  4. 4.10% of 560 =
  5. 5.10% of 330 =
  6. 6.1% of 30 =
  7. 7.15% of 780 =
  8. 8.1% of 270 =
  9. 9.1% of 400 =
  10. 10.50% of 110 =
  11. 11.20% of 600 =
  12. 12.10% of 350 =
  13. 13.5% of 560 =
  14. 14.20% of 630 =
  15. 15.25% of 150 =
  16. 16.1% of 560 =
  17. 17.5% of 100 =
  18. 18.15% of 230 =
  19. 19.10% of 90 =
  20. 20.5% of 380 =
  21. 21.20% of 370 =
  22. 22.10% of 830 =
  23. 23.5% of 490 =
  24. 24.50% of 150 =
  25. 25.5% of 20 =
  26. 26.10% of 490 =
  27. 27.50% of 30 =
  28. 28.1% of 700 =
  29. 29.10% of 210 =
  30. 30.1% of 440 =
  31. 31.15% of 250 =
  32. 32.10% of 520 =
  33. 33.15% of 410 =
  34. 34.5% of 510 =
  35. 35.5% of 230 =
  36. 36.1% of 150 =
  37. 37.15% of 610 =
  38. 38.10% of 310 =
  39. 39.5% of 380 =
  40. 40.10% of 670 =

Answer key

  1. 105
  2. 152
  3. 210
  4. 56
  5. 33
  6. 0.3
  7. 117
  8. 2.7
  9. 4
  10. 55
  11. 120
  12. 35
  13. 28
  14. 126
  15. 37.5
  16. 5.6
  17. 5
  18. 34.5
  19. 9
  20. 19
  21. 74
  22. 83
  23. 24.5
  24. 75
  25. 1
  26. 49
  27. 15
  28. 7
  29. 21
  30. 4.4
  31. 37.5
  32. 52
  33. 61.5
  34. 25.5
  35. 11.5
  36. 1.5
  37. 91.5
  38. 31
  39. 19
  40. 67

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