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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 761 · 40 questions
TalentJR

The trick (Split and double): Split the number into tens and ones: 37 = 30 + 7. Double each part (30 → 60, 7 → 14) — or halve each part. Add the two answers: 60 + 14 = 74.

NameDateTime takenScore ___ / 40
  1. 1.Half of 52 =
  2. 2.Half of 104 =
  3. 3.Double 57 =
  4. 4.Half of 158 =
  5. 5.Double 36 =
  6. 6.Half of 92 =
  7. 7.Double 12 =
  8. 8.Half of 138 =
  9. 9.Double 34 =
  10. 10.Double 63 =
  11. 11.Half of 166 =
  12. 12.Half of 142 =
  13. 13.Half of 88 =
  14. 14.Half of 66 =
  15. 15.Half of 132 =
  16. 16.Double 91 =
  17. 17.Double 85 =
  18. 18.Double 46 =
  19. 19.Half of 154 =
  20. 20.Double 67 =
  21. 21.Double 62 =
  22. 22.Double 37 =
  23. 23.Double 21 =
  24. 24.Half of 22 =
  25. 25.Half of 42 =
  26. 26.Double 56 =
  27. 27.Double 18 =
  28. 28.Half of 164 =
  29. 29.Half of 82 =
  30. 30.Half of 182 =
  31. 31.Double 23 =
  32. 32.Half of 18 =
  33. 33.Double 44 =
  34. 34.Half of 32 =
  35. 35.Half of 106 =
  36. 36.Half of 112 =
  37. 37.Half of 56 =
  38. 38.Double 52 =
  39. 39.Half of 118 =
  40. 40.Half of 62 =

Answer key

  1. 26
  2. 52
  3. 114
  4. 79
  5. 72
  6. 46
  7. 24
  8. 69
  9. 68
  10. 126
  11. 83
  12. 71
  13. 44
  14. 33
  15. 66
  16. 182
  17. 170
  18. 92
  19. 77
  20. 134
  21. 124
  22. 74
  23. 42
  24. 11
  25. 21
  26. 112
  27. 36
  28. 82
  29. 41
  30. 91
  31. 46
  32. 9
  33. 88
  34. 16
  35. 53
  36. 56
  37. 28
  38. 104
  39. 59
  40. 31

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