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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 286 · 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 96 =
  2. 2.Double 23 =
  3. 3.Double 67 =
  4. 4.Double 32 =
  5. 5.Half of 176 =
  6. 6.Half of 58 =
  7. 7.Double 88 =
  8. 8.Half of 76 =
  9. 9.Half of 14 =
  10. 10.Half of 98 =
  11. 11.Double 51 =
  12. 12.Half of 132 =
  13. 13.Double 25 =
  14. 14.Half of 108 =
  15. 15.Double 38 =
  16. 16.Double 78 =
  17. 17.Half of 104 =
  18. 18.Half of 186 =
  19. 19.Double 49 =
  20. 20.Double 79 =
  21. 21.Half of 142 =
  22. 22.Double 81 =
  23. 23.Double 14 =
  24. 24.Half of 18 =
  25. 25.Half of 198 =
  26. 26.Half of 88 =
  27. 27.Half of 152 =
  28. 28.Double 41 =
  29. 29.Double 17 =
  30. 30.Double 94 =
  31. 31.Half of 158 =
  32. 32.Double 57 =
  33. 33.Half of 138 =
  34. 34.Half of 102 =
  35. 35.Double 26 =
  36. 36.Double 44 =
  37. 37.Half of 178 =
  38. 38.Double 96 =
  39. 39.Double 83 =
  40. 40.Half of 68 =

Answer key

  1. 48
  2. 46
  3. 134
  4. 64
  5. 88
  6. 29
  7. 176
  8. 38
  9. 7
  10. 49
  11. 102
  12. 66
  13. 50
  14. 54
  15. 76
  16. 156
  17. 52
  18. 93
  19. 98
  20. 158
  21. 71
  22. 162
  23. 28
  24. 9
  25. 99
  26. 44
  27. 76
  28. 82
  29. 34
  30. 188
  31. 79
  32. 114
  33. 69
  34. 51
  35. 52
  36. 88
  37. 89
  38. 192
  39. 166
  40. 34

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