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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 232 · 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 172 =
  2. 2.Half of 22 =
  3. 3.Half of 146 =
  4. 4.Half of 82 =
  5. 5.Half of 52 =
  6. 6.Half of 138 =
  7. 7.Half of 134 =
  8. 8.Double 86 =
  9. 9.Double 21 =
  10. 10.Half of 38 =
  11. 11.Double 16 =
  12. 12.Half of 78 =
  13. 13.Half of 66 =
  14. 14.Double 62 =
  15. 15.Half of 162 =
  16. 16.Half of 132 =
  17. 17.Half of 62 =
  18. 18.Double 89 =
  19. 19.Double 59 =
  20. 20.Half of 76 =
  21. 21.Half of 102 =
  22. 22.Half of 32 =
  23. 23.Double 76 =
  24. 24.Half of 44 =
  25. 25.Double 61 =
  26. 26.Double 13 =
  27. 27.Double 18 =
  28. 28.Double 48 =
  29. 29.Double 92 =
  30. 30.Half of 88 =
  31. 31.Double 46 =
  32. 32.Double 35 =
  33. 33.Double 73 =
  34. 34.Half of 122 =
  35. 35.Double 77 =
  36. 36.Half of 192 =
  37. 37.Half of 24 =
  38. 38.Double 52 =
  39. 39.Double 94 =
  40. 40.Half of 72 =

Answer key

  1. 86
  2. 11
  3. 73
  4. 41
  5. 26
  6. 69
  7. 67
  8. 172
  9. 42
  10. 19
  11. 32
  12. 39
  13. 33
  14. 124
  15. 81
  16. 66
  17. 31
  18. 178
  19. 118
  20. 38
  21. 51
  22. 16
  23. 152
  24. 22
  25. 122
  26. 26
  27. 36
  28. 96
  29. 184
  30. 44
  31. 92
  32. 70
  33. 146
  34. 61
  35. 154
  36. 96
  37. 12
  38. 104
  39. 188
  40. 36

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