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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 621 · 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 72 =
  2. 2.Half of 148 =
  3. 3.Half of 172 =
  4. 4.Half of 68 =
  5. 5.Double 13 =
  6. 6.Half of 94 =
  7. 7.Double 85 =
  8. 8.Half of 22 =
  9. 9.Double 66 =
  10. 10.Double 61 =
  11. 11.Double 11 =
  12. 12.Half of 132 =
  13. 13.Half of 56 =
  14. 14.Double 33 =
  15. 15.Half of 42 =
  16. 16.Double 77 =
  17. 17.Double 36 =
  18. 18.Half of 158 =
  19. 19.Double 12 =
  20. 20.Double 31 =
  21. 21.Half of 32 =
  22. 22.Double 35 =
  23. 23.Double 69 =
  24. 24.Half of 52 =
  25. 25.Double 41 =
  26. 26.Half of 18 =
  27. 27.Half of 152 =
  28. 28.Half of 144 =
  29. 29.Double 67 =
  30. 30.Double 46 =
  31. 31.Double 34 =
  32. 32.Double 84 =
  33. 33.Double 91 =
  34. 34.Half of 36 =
  35. 35.Half of 26 =
  36. 36.Half of 138 =
  37. 37.Half of 116 =
  38. 38.Double 88 =
  39. 39.Double 52 =
  40. 40.Double 78 =

Answer key

  1. 144
  2. 74
  3. 86
  4. 34
  5. 26
  6. 47
  7. 170
  8. 11
  9. 132
  10. 122
  11. 22
  12. 66
  13. 28
  14. 66
  15. 21
  16. 154
  17. 72
  18. 79
  19. 24
  20. 62
  21. 16
  22. 70
  23. 138
  24. 26
  25. 82
  26. 9
  27. 76
  28. 72
  29. 134
  30. 92
  31. 68
  32. 168
  33. 182
  34. 18
  35. 13
  36. 69
  37. 58
  38. 176
  39. 104
  40. 156

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