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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 212 · 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.Double 38 =
  2. 2.Half of 24 =
  3. 3.Half of 94 =
  4. 4.Double 37 =
  5. 5.Double 13 =
  6. 6.Half of 162 =
  7. 7.Double 23 =
  8. 8.Double 83 =
  9. 9.Double 73 =
  10. 10.Double 63 =
  11. 11.Double 49 =
  12. 12.Double 86 =
  13. 13.Double 52 =
  14. 14.Double 44 =
  15. 15.Half of 88 =
  16. 16.Half of 132 =
  17. 17.Half of 136 =
  18. 18.Double 55 =
  19. 19.Double 91 =
  20. 20.Double 28 =
  21. 21.Double 41 =
  22. 22.Half of 158 =
  23. 23.Half of 36 =
  24. 24.Double 72 =
  25. 25.Double 36 =
  26. 26.Half of 96 =
  27. 27.Half of 122 =
  28. 28.Half of 152 =
  29. 29.Double 51 =
  30. 30.Double 19 =
  31. 31.Half of 78 =
  32. 32.Double 69 =
  33. 33.Double 61 =
  34. 34.Double 32 =
  35. 35.Half of 12 =
  36. 36.Half of 22 =
  37. 37.Double 21 =
  38. 38.Double 97 =
  39. 39.Double 43 =
  40. 40.Half of 182 =

Answer key

  1. 76
  2. 12
  3. 47
  4. 74
  5. 26
  6. 81
  7. 46
  8. 166
  9. 146
  10. 126
  11. 98
  12. 172
  13. 104
  14. 88
  15. 44
  16. 66
  17. 68
  18. 110
  19. 182
  20. 56
  21. 82
  22. 79
  23. 18
  24. 144
  25. 72
  26. 48
  27. 61
  28. 76
  29. 102
  30. 38
  31. 39
  32. 138
  33. 122
  34. 64
  35. 6
  36. 11
  37. 42
  38. 194
  39. 86
  40. 91

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