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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 965 · 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. 1.5% of 700 =
  2. 2.50% of 660 =
  3. 3.5% of 260 =
  4. 4.15% of 100 =
  5. 5.20% of 430 =
  6. 6.20% of 570 =
  7. 7.50% of 530 =
  8. 8.20% of 650 =
  9. 9.15% of 270 =
  10. 10.20% of 730 =
  11. 11.10% of 690 =
  12. 12.1% of 370 =
  13. 13.15% of 760 =
  14. 14.10% of 90 =
  15. 15.5% of 320 =
  16. 16.1% of 810 =
  17. 17.25% of 420 =
  18. 18.1% of 130 =
  19. 19.1% of 460 =
  20. 20.5% of 310 =
  21. 21.50% of 370 =
  22. 22.25% of 730 =
  23. 23.10% of 520 =
  24. 24.15% of 120 =
  25. 25.20% of 460 =
  26. 26.25% of 630 =
  27. 27.50% of 40 =
  28. 28.10% of 30 =
  29. 29.5% of 210 =
  30. 30.50% of 730 =
  31. 31.1% of 790 =
  32. 32.15% of 780 =
  33. 33.25% of 680 =
  34. 34.15% of 320 =
  35. 35.20% of 310 =
  36. 36.25% of 610 =
  37. 37.1% of 200 =
  38. 38.25% of 710 =
  39. 39.25% of 70 =
  40. 40.10% of 80 =

Answer key

  1. 35
  2. 330
  3. 13
  4. 15
  5. 86
  6. 114
  7. 265
  8. 130
  9. 40.5
  10. 146
  11. 69
  12. 3.7
  13. 114
  14. 9
  15. 16
  16. 8.1
  17. 105
  18. 1.3
  19. 4.6
  20. 15.5
  21. 185
  22. 182.5
  23. 52
  24. 18
  25. 92
  26. 157.5
  27. 20
  28. 3
  29. 10.5
  30. 365
  31. 7.9
  32. 117
  33. 170
  34. 48
  35. 62
  36. 152.5
  37. 2
  38. 177.5
  39. 17.5
  40. 8

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