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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 747 · 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 62 =
  2. 2.Half of 152 =
  3. 3.Double 28 =
  4. 4.Half of 24 =
  5. 5.Double 41 =
  6. 6.Half of 134 =
  7. 7.Half of 106 =
  8. 8.Half of 196 =
  9. 9.Double 44 =
  10. 10.Double 82 =
  11. 11.Double 86 =
  12. 12.Double 64 =
  13. 13.Half of 132 =
  14. 14.Half of 38 =
  15. 15.Double 35 =
  16. 16.Half of 172 =
  17. 17.Half of 186 =
  18. 18.Half of 78 =
  19. 19.Double 71 =
  20. 20.Half of 102 =
  21. 21.Double 87 =
  22. 22.Half of 122 =
  23. 23.Half of 154 =
  24. 24.Half of 178 =
  25. 25.Double 95 =
  26. 26.Half of 54 =
  27. 27.Double 49 =
  28. 28.Double 61 =
  29. 29.Double 54 =
  30. 30.Double 16 =
  31. 31.Double 22 =
  32. 32.Double 91 =
  33. 33.Half of 22 =
  34. 34.Double 75 =
  35. 35.Half of 114 =
  36. 36.Half of 62 =
  37. 37.Double 51 =
  38. 38.Double 88 =
  39. 39.Half of 192 =
  40. 40.Half of 118 =

Answer key

  1. 124
  2. 76
  3. 56
  4. 12
  5. 82
  6. 67
  7. 53
  8. 98
  9. 88
  10. 164
  11. 172
  12. 128
  13. 66
  14. 19
  15. 70
  16. 86
  17. 93
  18. 39
  19. 142
  20. 51
  21. 174
  22. 61
  23. 77
  24. 89
  25. 190
  26. 27
  27. 98
  28. 122
  29. 108
  30. 32
  31. 44
  32. 182
  33. 11
  34. 150
  35. 57
  36. 31
  37. 102
  38. 176
  39. 96
  40. 59

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