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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 145 · 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 74 =
  2. 2.Double 28 =
  3. 3.Half of 42 =
  4. 4.Half of 152 =
  5. 5.Double 93 =
  6. 6.Half of 154 =
  7. 7.Half of 72 =
  8. 8.Double 78 =
  9. 9.Double 59 =
  10. 10.Half of 124 =
  11. 11.Half of 56 =
  12. 12.Half of 54 =
  13. 13.Half of 104 =
  14. 14.Half of 38 =
  15. 15.Double 16 =
  16. 16.Double 21 =
  17. 17.Double 49 =
  18. 18.Double 83 =
  19. 19.Double 87 =
  20. 20.Double 41 =
  21. 21.Double 72 =
  22. 22.Double 31 =
  23. 23.Half of 34 =
  24. 24.Half of 132 =
  25. 25.Double 55 =
  26. 26.Half of 64 =
  27. 27.Double 81 =
  28. 28.Half of 58 =
  29. 29.Half of 192 =
  30. 30.Double 79 =
  31. 31.Half of 92 =
  32. 32.Double 73 =
  33. 33.Double 35 =
  34. 34.Double 69 =
  35. 35.Double 13 =
  36. 36.Double 61 =
  37. 37.Half of 146 =
  38. 38.Half of 172 =
  39. 39.Double 33 =
  40. 40.Half of 112 =

Answer key

  1. 37
  2. 56
  3. 21
  4. 76
  5. 186
  6. 77
  7. 36
  8. 156
  9. 118
  10. 62
  11. 28
  12. 27
  13. 52
  14. 19
  15. 32
  16. 42
  17. 98
  18. 166
  19. 174
  20. 82
  21. 144
  22. 62
  23. 17
  24. 66
  25. 110
  26. 32
  27. 162
  28. 29
  29. 96
  30. 158
  31. 46
  32. 146
  33. 70
  34. 138
  35. 26
  36. 122
  37. 73
  38. 86
  39. 66
  40. 56

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