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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 128 · 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 96 =
  2. 2.Double 76 =
  3. 3.Double 67 =
  4. 4.Half of 116 =
  5. 5.Double 71 =
  6. 6.Half of 192 =
  7. 7.Half of 56 =
  8. 8.Half of 22 =
  9. 9.Half of 36 =
  10. 10.Double 12 =
  11. 11.Half of 186 =
  12. 12.Half of 146 =
  13. 13.Half of 18 =
  14. 14.Half of 68 =
  15. 15.Double 44 =
  16. 16.Half of 66 =
  17. 17.Half of 38 =
  18. 18.Half of 58 =
  19. 19.Half of 34 =
  20. 20.Double 84 =
  21. 21.Double 51 =
  22. 22.Double 88 =
  23. 23.Half of 152 =
  24. 24.Half of 124 =
  25. 25.Half of 172 =
  26. 26.Double 41 =
  27. 27.Half of 64 =
  28. 28.Half of 148 =
  29. 29.Half of 12 =
  30. 30.Half of 114 =
  31. 31.Double 94 =
  32. 32.Half of 162 =
  33. 33.Double 92 =
  34. 34.Half of 42 =
  35. 35.Double 24 =
  36. 36.Double 83 =
  37. 37.Half of 14 =
  38. 38.Double 28 =
  39. 39.Half of 32 =
  40. 40.Double 73 =

Answer key

  1. 48
  2. 152
  3. 134
  4. 58
  5. 142
  6. 96
  7. 28
  8. 11
  9. 18
  10. 24
  11. 93
  12. 73
  13. 9
  14. 34
  15. 88
  16. 33
  17. 19
  18. 29
  19. 17
  20. 168
  21. 102
  22. 176
  23. 76
  24. 62
  25. 86
  26. 82
  27. 32
  28. 74
  29. 6
  30. 57
  31. 188
  32. 81
  33. 184
  34. 21
  35. 48
  36. 166
  37. 7
  38. 56
  39. 16
  40. 146

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