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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 644 · 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 12 =
  2. 2.Double 27 =
  3. 3.Double 62 =
  4. 4.Half of 92 =
  5. 5.Double 25 =
  6. 6.Double 15 =
  7. 7.Half of 104 =
  8. 8.Half of 34 =
  9. 9.Double 28 =
  10. 10.Double 51 =
  11. 11.Double 91 =
  12. 12.Half of 22 =
  13. 13.Double 64 =
  14. 14.Half of 162 =
  15. 15.Double 77 =
  16. 16.Half of 118 =
  17. 17.Half of 62 =
  18. 18.Double 84 =
  19. 19.Double 18 =
  20. 20.Double 78 =
  21. 21.Half of 166 =
  22. 22.Half of 188 =
  23. 23.Half of 52 =
  24. 24.Double 49 =
  25. 25.Double 81 =
  26. 26.Double 42 =
  27. 27.Double 56 =
  28. 28.Half of 146 =
  29. 29.Half of 82 =
  30. 30.Half of 42 =
  31. 31.Half of 72 =
  32. 32.Half of 38 =
  33. 33.Double 72 =
  34. 34.Half of 78 =
  35. 35.Double 63 =
  36. 36.Double 94 =
  37. 37.Double 66 =
  38. 38.Double 33 =
  39. 39.Double 16 =
  40. 40.Double 73 =

Answer key

  1. 24
  2. 54
  3. 124
  4. 46
  5. 50
  6. 30
  7. 52
  8. 17
  9. 56
  10. 102
  11. 182
  12. 11
  13. 128
  14. 81
  15. 154
  16. 59
  17. 31
  18. 168
  19. 36
  20. 156
  21. 83
  22. 94
  23. 26
  24. 98
  25. 162
  26. 84
  27. 112
  28. 73
  29. 41
  30. 21
  31. 36
  32. 19
  33. 144
  34. 39
  35. 126
  36. 188
  37. 132
  38. 66
  39. 32
  40. 146

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