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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 261 · 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 11 =
  2. 2.Double 16 =
  3. 3.Double 87 =
  4. 4.Half of 132 =
  5. 5.Double 67 =
  6. 6.Double 94 =
  7. 7.Double 41 =
  8. 8.Half of 134 =
  9. 9.Half of 82 =
  10. 10.Half of 116 =
  11. 11.Double 77 =
  12. 12.Double 48 =
  13. 13.Double 31 =
  14. 14.Half of 72 =
  15. 15.Half of 22 =
  16. 16.Half of 128 =
  17. 17.Half of 166 =
  18. 18.Double 91 =
  19. 19.Double 62 =
  20. 20.Double 49 =
  21. 21.Double 61 =
  22. 22.Double 59 =
  23. 23.Half of 58 =
  24. 24.Half of 104 =
  25. 25.Half of 114 =
  26. 26.Double 35 =
  27. 27.Half of 152 =
  28. 28.Double 17 =
  29. 29.Half of 56 =
  30. 30.Double 55 =
  31. 31.Half of 178 =
  32. 32.Half of 32 =
  33. 33.Double 71 =
  34. 34.Half of 182 =
  35. 35.Half of 176 =
  36. 36.Half of 188 =
  37. 37.Half of 142 =
  38. 38.Half of 146 =
  39. 39.Double 25 =
  40. 40.Double 82 =

Answer key

  1. 22
  2. 32
  3. 174
  4. 66
  5. 134
  6. 188
  7. 82
  8. 67
  9. 41
  10. 58
  11. 154
  12. 96
  13. 62
  14. 36
  15. 11
  16. 64
  17. 83
  18. 182
  19. 124
  20. 98
  21. 122
  22. 118
  23. 29
  24. 52
  25. 57
  26. 70
  27. 76
  28. 34
  29. 28
  30. 110
  31. 89
  32. 16
  33. 142
  34. 91
  35. 88
  36. 94
  37. 71
  38. 73
  39. 50
  40. 164

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