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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 230 · 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 166 =
  2. 2.Half of 192 =
  3. 3.Double 59 =
  4. 4.Half of 132 =
  5. 5.Half of 74 =
  6. 6.Half of 22 =
  7. 7.Half of 62 =
  8. 8.Half of 108 =
  9. 9.Double 84 =
  10. 10.Half of 82 =
  11. 11.Double 88 =
  12. 12.Double 47 =
  13. 13.Half of 112 =
  14. 14.Double 32 =
  15. 15.Double 39 =
  16. 16.Half of 126 =
  17. 17.Double 49 =
  18. 18.Double 41 =
  19. 19.Half of 102 =
  20. 20.Half of 142 =
  21. 21.Double 61 =
  22. 22.Half of 184 =
  23. 23.Double 55 =
  24. 24.Half of 134 =
  25. 25.Double 28 =
  26. 26.Half of 138 =
  27. 27.Half of 182 =
  28. 28.Double 62 =
  29. 29.Double 86 =
  30. 30.Half of 152 =
  31. 31.Half of 66 =
  32. 32.Double 43 =
  33. 33.Half of 124 =
  34. 34.Double 13 =
  35. 35.Half of 118 =
  36. 36.Double 51 =
  37. 37.Half of 92 =
  38. 38.Double 25 =
  39. 39.Half of 194 =
  40. 40.Half of 72 =

Answer key

  1. 83
  2. 96
  3. 118
  4. 66
  5. 37
  6. 11
  7. 31
  8. 54
  9. 168
  10. 41
  11. 176
  12. 94
  13. 56
  14. 64
  15. 78
  16. 63
  17. 98
  18. 82
  19. 51
  20. 71
  21. 122
  22. 92
  23. 110
  24. 67
  25. 56
  26. 69
  27. 91
  28. 124
  29. 172
  30. 76
  31. 33
  32. 86
  33. 62
  34. 26
  35. 59
  36. 102
  37. 46
  38. 50
  39. 97
  40. 36

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