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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 466 · 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 68 =
  2. 2.Half of 44 =
  3. 3.Double 21 =
  4. 4.Half of 192 =
  5. 5.Double 68 =
  6. 6.Half of 148 =
  7. 7.Half of 92 =
  8. 8.Double 69 =
  9. 9.Half of 36 =
  10. 10.Double 16 =
  11. 11.Half of 136 =
  12. 12.Half of 128 =
  13. 13.Double 71 =
  14. 14.Half of 62 =
  15. 15.Half of 74 =
  16. 16.Double 48 =
  17. 17.Double 56 =
  18. 18.Double 54 =
  19. 19.Double 83 =
  20. 20.Double 42 =
  21. 21.Half of 22 =
  22. 22.Half of 114 =
  23. 23.Double 49 =
  24. 24.Half of 46 =
  25. 25.Half of 54 =
  26. 26.Half of 26 =
  27. 27.Double 33 =
  28. 28.Double 65 =
  29. 29.Double 97 =
  30. 30.Double 44 =
  31. 31.Half of 52 =
  32. 32.Double 59 =
  33. 33.Half of 132 =
  34. 34.Half of 194 =
  35. 35.Half of 86 =
  36. 36.Half of 78 =
  37. 37.Half of 42 =
  38. 38.Double 96 =
  39. 39.Double 78 =
  40. 40.Half of 172 =

Answer key

  1. 34
  2. 22
  3. 42
  4. 96
  5. 136
  6. 74
  7. 46
  8. 138
  9. 18
  10. 32
  11. 68
  12. 64
  13. 142
  14. 31
  15. 37
  16. 96
  17. 112
  18. 108
  19. 166
  20. 84
  21. 11
  22. 57
  23. 98
  24. 23
  25. 27
  26. 13
  27. 66
  28. 130
  29. 194
  30. 88
  31. 26
  32. 118
  33. 66
  34. 97
  35. 43
  36. 39
  37. 21
  38. 192
  39. 156
  40. 86

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