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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 162 · 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 38 =
  2. 2.Double 92 =
  3. 3.Double 88 =
  4. 4.Half of 24 =
  5. 5.Double 13 =
  6. 6.Half of 192 =
  7. 7.Half of 28 =
  8. 8.Double 62 =
  9. 9.Half of 32 =
  10. 10.Half of 96 =
  11. 11.Half of 74 =
  12. 12.Double 58 =
  13. 13.Double 25 =
  14. 14.Double 11 =
  15. 15.Half of 42 =
  16. 16.Double 28 =
  17. 17.Half of 18 =
  18. 18.Double 83 =
  19. 19.Double 23 =
  20. 20.Half of 104 =
  21. 21.Double 77 =
  22. 22.Half of 56 =
  23. 23.Double 36 =
  24. 24.Half of 36 =
  25. 25.Half of 76 =
  26. 26.Double 41 =
  27. 27.Double 14 =
  28. 28.Double 96 =
  29. 29.Half of 72 =
  30. 30.Double 81 =
  31. 31.Half of 182 =
  32. 32.Double 61 =
  33. 33.Double 49 =
  34. 34.Half of 94 =
  35. 35.Double 37 =
  36. 36.Half of 78 =
  37. 37.Half of 88 =
  38. 38.Half of 62 =
  39. 39.Double 68 =
  40. 40.Half of 142 =

Answer key

  1. 76
  2. 184
  3. 176
  4. 12
  5. 26
  6. 96
  7. 14
  8. 124
  9. 16
  10. 48
  11. 37
  12. 116
  13. 50
  14. 22
  15. 21
  16. 56
  17. 9
  18. 166
  19. 46
  20. 52
  21. 154
  22. 28
  23. 72
  24. 18
  25. 38
  26. 82
  27. 28
  28. 192
  29. 36
  30. 162
  31. 91
  32. 122
  33. 98
  34. 47
  35. 74
  36. 39
  37. 44
  38. 31
  39. 136
  40. 71

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