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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 240 · 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 118 =
  2. 2.Double 85 =
  3. 3.Half of 168 =
  4. 4.Double 23 =
  5. 5.Half of 126 =
  6. 6.Half of 172 =
  7. 7.Half of 122 =
  8. 8.Half of 182 =
  9. 9.Double 68 =
  10. 10.Half of 42 =
  11. 11.Half of 114 =
  12. 12.Double 27 =
  13. 13.Half of 62 =
  14. 14.Double 81 =
  15. 15.Half of 16 =
  16. 16.Double 91 =
  17. 17.Double 35 =
  18. 18.Double 13 =
  19. 19.Double 52 =
  20. 20.Half of 14 =
  21. 21.Half of 104 =
  22. 22.Double 56 =
  23. 23.Half of 22 =
  24. 24.Double 38 =
  25. 25.Double 97 =
  26. 26.Double 37 =
  27. 27.Half of 138 =
  28. 28.Half of 36 =
  29. 29.Half of 102 =
  30. 30.Double 61 =
  31. 31.Half of 92 =
  32. 32.Half of 188 =
  33. 33.Half of 54 =
  34. 34.Double 92 =
  35. 35.Double 78 =
  36. 36.Double 26 =
  37. 37.Half of 148 =
  38. 38.Half of 194 =
  39. 39.Half of 48 =
  40. 40.Half of 46 =

Answer key

  1. 59
  2. 170
  3. 84
  4. 46
  5. 63
  6. 86
  7. 61
  8. 91
  9. 136
  10. 21
  11. 57
  12. 54
  13. 31
  14. 162
  15. 8
  16. 182
  17. 70
  18. 26
  19. 104
  20. 7
  21. 52
  22. 112
  23. 11
  24. 76
  25. 194
  26. 74
  27. 69
  28. 18
  29. 51
  30. 122
  31. 46
  32. 94
  33. 27
  34. 184
  35. 156
  36. 52
  37. 74
  38. 97
  39. 24
  40. 23

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