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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 343 · 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 192 =
  2. 2.Double 14 =
  3. 3.Double 34 =
  4. 4.Half of 162 =
  5. 5.Half of 134 =
  6. 6.Double 83 =
  7. 7.Double 37 =
  8. 8.Half of 142 =
  9. 9.Double 66 =
  10. 10.Double 91 =
  11. 11.Double 61 =
  12. 12.Double 87 =
  13. 13.Double 88 =
  14. 14.Half of 182 =
  15. 15.Double 56 =
  16. 16.Half of 148 =
  17. 17.Double 16 =
  18. 18.Half of 164 =
  19. 19.Half of 116 =
  20. 20.Double 22 =
  21. 21.Double 52 =
  22. 22.Half of 118 =
  23. 23.Half of 124 =
  24. 24.Double 29 =
  25. 25.Double 53 =
  26. 26.Half of 132 =
  27. 27.Double 41 =
  28. 28.Double 62 =
  29. 29.Half of 184 =
  30. 30.Half of 84 =
  31. 31.Half of 154 =
  32. 32.Half of 46 =
  33. 33.Double 31 =
  34. 34.Half of 76 =
  35. 35.Half of 58 =
  36. 36.Double 46 =
  37. 37.Double 55 =
  38. 38.Half of 56 =
  39. 39.Half of 144 =
  40. 40.Double 73 =

Answer key

  1. 96
  2. 28
  3. 68
  4. 81
  5. 67
  6. 166
  7. 74
  8. 71
  9. 132
  10. 182
  11. 122
  12. 174
  13. 176
  14. 91
  15. 112
  16. 74
  17. 32
  18. 82
  19. 58
  20. 44
  21. 104
  22. 59
  23. 62
  24. 58
  25. 106
  26. 66
  27. 82
  28. 124
  29. 92
  30. 42
  31. 77
  32. 23
  33. 62
  34. 38
  35. 29
  36. 92
  37. 110
  38. 28
  39. 72
  40. 146

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