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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 325 · 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 174 =
  2. 2.Half of 192 =
  3. 3.Double 13 =
  4. 4.Half of 136 =
  5. 5.Double 81 =
  6. 6.Double 97 =
  7. 7.Double 52 =
  8. 8.Double 61 =
  9. 9.Half of 38 =
  10. 10.Half of 134 =
  11. 11.Double 74 =
  12. 12.Double 95 =
  13. 13.Half of 132 =
  14. 14.Double 92 =
  15. 15.Double 54 =
  16. 16.Double 24 =
  17. 17.Double 41 =
  18. 18.Double 33 =
  19. 19.Half of 124 =
  20. 20.Half of 82 =
  21. 21.Half of 182 =
  22. 22.Half of 168 =
  23. 23.Half of 52 =
  24. 24.Double 15 =
  25. 25.Double 17 =
  26. 26.Double 71 =
  27. 27.Half of 32 =
  28. 28.Double 73 =
  29. 29.Half of 42 =
  30. 30.Half of 112 =
  31. 31.Double 49 =
  32. 32.Double 22 =
  33. 33.Half of 178 =
  34. 34.Half of 118 =
  35. 35.Half of 22 =
  36. 36.Double 29 =
  37. 37.Half of 108 =
  38. 38.Double 83 =
  39. 39.Double 51 =
  40. 40.Double 72 =

Answer key

  1. 87
  2. 96
  3. 26
  4. 68
  5. 162
  6. 194
  7. 104
  8. 122
  9. 19
  10. 67
  11. 148
  12. 190
  13. 66
  14. 184
  15. 108
  16. 48
  17. 82
  18. 66
  19. 62
  20. 41
  21. 91
  22. 84
  23. 26
  24. 30
  25. 34
  26. 142
  27. 16
  28. 146
  29. 21
  30. 56
  31. 98
  32. 44
  33. 89
  34. 59
  35. 11
  36. 58
  37. 54
  38. 166
  39. 102
  40. 144

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