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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 185 · 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 25 =
  2. 2.Double 27 =
  3. 3.Half of 112 =
  4. 4.Half of 32 =
  5. 5.Half of 14 =
  6. 6.Half of 52 =
  7. 7.Half of 86 =
  8. 8.Double 79 =
  9. 9.Double 91 =
  10. 10.Double 81 =
  11. 11.Double 63 =
  12. 12.Half of 172 =
  13. 13.Half of 134 =
  14. 14.Double 61 =
  15. 15.Double 14 =
  16. 16.Half of 176 =
  17. 17.Half of 182 =
  18. 18.Double 69 =
  19. 19.Half of 22 =
  20. 20.Half of 196 =
  21. 21.Half of 44 =
  22. 22.Double 71 =
  23. 23.Half of 194 =
  24. 24.Double 97 =
  25. 25.Half of 192 =
  26. 26.Half of 152 =
  27. 27.Half of 118 =
  28. 28.Double 58 =
  29. 29.Double 66 =
  30. 30.Half of 26 =
  31. 31.Half of 28 =
  32. 32.Half of 142 =
  33. 33.Double 31 =
  34. 34.Half of 164 =
  35. 35.Double 26 =
  36. 36.Double 51 =
  37. 37.Half of 126 =
  38. 38.Half of 36 =
  39. 39.Half of 114 =
  40. 40.Half of 12 =

Answer key

  1. 50
  2. 54
  3. 56
  4. 16
  5. 7
  6. 26
  7. 43
  8. 158
  9. 182
  10. 162
  11. 126
  12. 86
  13. 67
  14. 122
  15. 28
  16. 88
  17. 91
  18. 138
  19. 11
  20. 98
  21. 22
  22. 142
  23. 97
  24. 194
  25. 96
  26. 76
  27. 59
  28. 116
  29. 132
  30. 13
  31. 14
  32. 71
  33. 62
  34. 82
  35. 52
  36. 102
  37. 63
  38. 18
  39. 57
  40. 6

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