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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 371 · 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.Half of 48 =
  2. 2.Half of 112 =
  3. 3.Half of 108 =
  4. 4.Half of 146 =
  5. 5.Double 41 =
  6. 6.Double 21 =
  7. 7.Half of 148 =
  8. 8.Double 15 =
  9. 9.Double 27 =
  10. 10.Double 44 =
  11. 11.Half of 126 =
  12. 12.Half of 174 =
  13. 13.Half of 16 =
  14. 14.Half of 36 =
  15. 15.Double 91 =
  16. 16.Double 84 =
  17. 17.Half of 102 =
  18. 18.Double 61 =
  19. 19.Half of 118 =
  20. 20.Double 88 =
  21. 21.Half of 124 =
  22. 22.Half of 68 =
  23. 23.Half of 172 =
  24. 24.Half of 46 =
  25. 25.Half of 18 =
  26. 26.Half of 128 =
  27. 27.Half of 152 =
  28. 28.Half of 22 =
  29. 29.Double 24 =
  30. 30.Double 63 =
  31. 31.Double 86 =
  32. 32.Half of 66 =
  33. 33.Half of 92 =
  34. 34.Half of 162 =
  35. 35.Double 68 =
  36. 36.Half of 134 =
  37. 37.Double 22 =
  38. 38.Double 38 =
  39. 39.Half of 58 =
  40. 40.Half of 136 =

Answer key

  1. 24
  2. 56
  3. 54
  4. 73
  5. 82
  6. 42
  7. 74
  8. 30
  9. 54
  10. 88
  11. 63
  12. 87
  13. 8
  14. 18
  15. 182
  16. 168
  17. 51
  18. 122
  19. 59
  20. 176
  21. 62
  22. 34
  23. 86
  24. 23
  25. 9
  26. 64
  27. 76
  28. 11
  29. 48
  30. 126
  31. 172
  32. 33
  33. 46
  34. 81
  35. 136
  36. 67
  37. 44
  38. 76
  39. 29
  40. 68

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