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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 130 · 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 23 =
  2. 2.Double 44 =
  3. 3.Double 37 =
  4. 4.Double 12 =
  5. 5.Double 45 =
  6. 6.Half of 52 =
  7. 7.Half of 132 =
  8. 8.Double 51 =
  9. 9.Half of 78 =
  10. 10.Half of 62 =
  11. 11.Double 91 =
  12. 12.Double 48 =
  13. 13.Half of 164 =
  14. 14.Half of 28 =
  15. 15.Half of 144 =
  16. 16.Double 34 =
  17. 17.Half of 176 =
  18. 18.Double 61 =
  19. 19.Double 21 =
  20. 20.Half of 194 =
  21. 21.Half of 112 =
  22. 22.Half of 162 =
  23. 23.Half of 114 =
  24. 24.Half of 102 =
  25. 25.Double 27 =
  26. 26.Double 47 =
  27. 27.Half of 32 =
  28. 28.Double 71 =
  29. 29.Half of 76 =
  30. 30.Half of 126 =
  31. 31.Double 82 =
  32. 32.Half of 66 =
  33. 33.Double 53 =
  34. 34.Half of 12 =
  35. 35.Double 92 =
  36. 36.Double 38 =
  37. 37.Half of 94 =
  38. 38.Half of 122 =
  39. 39.Half of 98 =
  40. 40.Double 97 =

Answer key

  1. 46
  2. 88
  3. 74
  4. 24
  5. 90
  6. 26
  7. 66
  8. 102
  9. 39
  10. 31
  11. 182
  12. 96
  13. 82
  14. 14
  15. 72
  16. 68
  17. 88
  18. 122
  19. 42
  20. 97
  21. 56
  22. 81
  23. 57
  24. 51
  25. 54
  26. 94
  27. 16
  28. 142
  29. 38
  30. 63
  31. 164
  32. 33
  33. 106
  34. 6
  35. 184
  36. 76
  37. 47
  38. 61
  39. 49
  40. 194

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