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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 749 · 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 90 =
  2. 2.5% of 740 =
  3. 3.20% of 650 =
  4. 4.15% of 320 =
  5. 5.5% of 520 =
  6. 6.20% of 490 =
  7. 7.10% of 160 =
  8. 8.50% of 130 =
  9. 9.50% of 740 =
  10. 10.50% of 240 =
  11. 11.5% of 110 =
  12. 12.10% of 120 =
  13. 13.20% of 730 =
  14. 14.5% of 320 =
  15. 15.15% of 80 =
  16. 16.10% of 380 =
  17. 17.25% of 770 =
  18. 18.10% of 780 =
  19. 19.20% of 170 =
  20. 20.15% of 900 =
  21. 21.1% of 250 =
  22. 22.50% of 240 =
  23. 23.1% of 130 =
  24. 24.50% of 210 =
  25. 25.25% of 870 =
  26. 26.1% of 890 =
  27. 27.15% of 820 =
  28. 28.50% of 680 =
  29. 29.1% of 840 =
  30. 30.25% of 140 =
  31. 31.20% of 580 =
  32. 32.15% of 210 =
  33. 33.5% of 640 =
  34. 34.50% of 80 =
  35. 35.15% of 550 =
  36. 36.5% of 310 =
  37. 37.5% of 680 =
  38. 38.10% of 760 =
  39. 39.25% of 830 =
  40. 40.25% of 60 =

Answer key

  1. 45
  2. 37
  3. 130
  4. 48
  5. 26
  6. 98
  7. 16
  8. 65
  9. 370
  10. 120
  11. 5.5
  12. 12
  13. 146
  14. 16
  15. 12
  16. 38
  17. 192.5
  18. 78
  19. 34
  20. 135
  21. 2.5
  22. 120
  23. 1.3
  24. 105
  25. 217.5
  26. 8.9
  27. 123
  28. 340
  29. 8.4
  30. 35
  31. 116
  32. 31.5
  33. 32
  34. 40
  35. 82.5
  36. 15.5
  37. 34
  38. 76
  39. 207.5
  40. 15

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