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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 138 · 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 106 =
  2. 2.Half of 124 =
  3. 3.Half of 108 =
  4. 4.Double 18 =
  5. 5.Half of 176 =
  6. 6.Half of 92 =
  7. 7.Half of 192 =
  8. 8.Double 52 =
  9. 9.Half of 58 =
  10. 10.Half of 22 =
  11. 11.Half of 142 =
  12. 12.Double 59 =
  13. 13.Double 23 =
  14. 14.Double 54 =
  15. 15.Half of 78 =
  16. 16.Double 84 =
  17. 17.Half of 42 =
  18. 18.Half of 36 =
  19. 19.Half of 164 =
  20. 20.Half of 82 =
  21. 21.Half of 152 =
  22. 22.Double 56 =
  23. 23.Double 79 =
  24. 24.Double 31 =
  25. 25.Double 65 =
  26. 26.Double 81 =
  27. 27.Half of 44 =
  28. 28.Double 88 =
  29. 29.Double 98 =
  30. 30.Double 27 =
  31. 31.Double 95 =
  32. 32.Double 86 =
  33. 33.Half of 102 =
  34. 34.Double 61 =
  35. 35.Half of 16 =
  36. 36.Double 45 =
  37. 37.Double 68 =
  38. 38.Half of 84 =
  39. 39.Double 97 =
  40. 40.Double 28 =

Answer key

  1. 53
  2. 62
  3. 54
  4. 36
  5. 88
  6. 46
  7. 96
  8. 104
  9. 29
  10. 11
  11. 71
  12. 118
  13. 46
  14. 108
  15. 39
  16. 168
  17. 21
  18. 18
  19. 82
  20. 41
  21. 76
  22. 112
  23. 158
  24. 62
  25. 130
  26. 162
  27. 22
  28. 176
  29. 196
  30. 54
  31. 190
  32. 172
  33. 51
  34. 122
  35. 8
  36. 90
  37. 136
  38. 42
  39. 194
  40. 56

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