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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 756 · 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 18 =
  2. 2.Half of 28 =
  3. 3.Half of 12 =
  4. 4.Half of 154 =
  5. 5.Double 59 =
  6. 6.Double 84 =
  7. 7.Double 62 =
  8. 8.Half of 158 =
  9. 9.Double 81 =
  10. 10.Double 76 =
  11. 11.Double 86 =
  12. 12.Double 15 =
  13. 13.Double 41 =
  14. 14.Half of 176 =
  15. 15.Double 23 =
  16. 16.Double 68 =
  17. 17.Half of 96 =
  18. 18.Half of 146 =
  19. 19.Double 34 =
  20. 20.Half of 138 =
  21. 21.Half of 56 =
  22. 22.Half of 92 =
  23. 23.Half of 126 =
  24. 24.Double 36 =
  25. 25.Half of 98 =
  26. 26.Half of 162 =
  27. 27.Double 67 =
  28. 28.Double 24 =
  29. 29.Double 22 =
  30. 30.Double 71 =
  31. 31.Double 74 =
  32. 32.Double 11 =
  33. 33.Half of 122 =
  34. 34.Half of 198 =
  35. 35.Half of 124 =
  36. 36.Double 66 =
  37. 37.Half of 172 =
  38. 38.Half of 26 =
  39. 39.Half of 136 =
  40. 40.Half of 82 =

Answer key

  1. 9
  2. 14
  3. 6
  4. 77
  5. 118
  6. 168
  7. 124
  8. 79
  9. 162
  10. 152
  11. 172
  12. 30
  13. 82
  14. 88
  15. 46
  16. 136
  17. 48
  18. 73
  19. 68
  20. 69
  21. 28
  22. 46
  23. 63
  24. 72
  25. 49
  26. 81
  27. 134
  28. 48
  29. 44
  30. 142
  31. 148
  32. 22
  33. 61
  34. 99
  35. 62
  36. 132
  37. 86
  38. 13
  39. 68
  40. 41

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