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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 790 · 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 94 =
  2. 2.Double 82 =
  3. 3.Half of 72 =
  4. 4.Half of 46 =
  5. 5.Half of 64 =
  6. 6.Double 75 =
  7. 7.Half of 172 =
  8. 8.Half of 116 =
  9. 9.Double 36 =
  10. 10.Half of 182 =
  11. 11.Double 22 =
  12. 12.Double 19 =
  13. 13.Half of 58 =
  14. 14.Double 81 =
  15. 15.Double 62 =
  16. 16.Double 31 =
  17. 17.Double 32 =
  18. 18.Half of 34 =
  19. 19.Double 96 =
  20. 20.Half of 78 =
  21. 21.Half of 152 =
  22. 22.Double 91 =
  23. 23.Double 47 =
  24. 24.Half of 194 =
  25. 25.Double 18 =
  26. 26.Half of 132 =
  27. 27.Half of 122 =
  28. 28.Double 16 =
  29. 29.Double 52 =
  30. 30.Double 54 =
  31. 31.Half of 42 =
  32. 32.Half of 36 =
  33. 33.Half of 56 =
  34. 34.Double 43 =
  35. 35.Double 59 =
  36. 36.Half of 28 =
  37. 37.Double 68 =
  38. 38.Half of 52 =
  39. 39.Double 23 =
  40. 40.Double 74 =

Answer key

  1. 47
  2. 164
  3. 36
  4. 23
  5. 32
  6. 150
  7. 86
  8. 58
  9. 72
  10. 91
  11. 44
  12. 38
  13. 29
  14. 162
  15. 124
  16. 62
  17. 64
  18. 17
  19. 192
  20. 39
  21. 76
  22. 182
  23. 94
  24. 97
  25. 36
  26. 66
  27. 61
  28. 32
  29. 104
  30. 108
  31. 21
  32. 18
  33. 28
  34. 86
  35. 118
  36. 14
  37. 136
  38. 26
  39. 46
  40. 148

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