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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 601 · 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.Half of 92 =
  3. 3.Half of 116 =
  4. 4.Double 62 =
  5. 5.Double 19 =
  6. 6.Double 94 =
  7. 7.Double 13 =
  8. 8.Double 54 =
  9. 9.Half of 106 =
  10. 10.Half of 194 =
  11. 11.Double 64 =
  12. 12.Half of 32 =
  13. 13.Half of 46 =
  14. 14.Half of 178 =
  15. 15.Double 91 =
  16. 16.Double 43 =
  17. 17.Half of 26 =
  18. 18.Double 12 =
  19. 19.Half of 76 =
  20. 20.Half of 124 =
  21. 21.Half of 12 =
  22. 22.Double 22 =
  23. 23.Double 63 =
  24. 24.Double 96 =
  25. 25.Half of 112 =
  26. 26.Half of 28 =
  27. 27.Half of 56 =
  28. 28.Double 97 =
  29. 29.Double 61 =
  30. 30.Half of 174 =
  31. 31.Half of 164 =
  32. 32.Double 28 =
  33. 33.Double 45 =
  34. 34.Double 31 =
  35. 35.Half of 42 =
  36. 36.Double 78 =
  37. 37.Half of 22 =
  38. 38.Half of 18 =
  39. 39.Half of 68 =
  40. 40.Double 32 =

Answer key

  1. 47
  2. 46
  3. 58
  4. 124
  5. 38
  6. 188
  7. 26
  8. 108
  9. 53
  10. 97
  11. 128
  12. 16
  13. 23
  14. 89
  15. 182
  16. 86
  17. 13
  18. 24
  19. 38
  20. 62
  21. 6
  22. 44
  23. 126
  24. 192
  25. 56
  26. 14
  27. 28
  28. 194
  29. 122
  30. 87
  31. 82
  32. 56
  33. 90
  34. 62
  35. 21
  36. 156
  37. 11
  38. 9
  39. 34
  40. 64

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