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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 136 · 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 52 =
  2. 2.Double 38 =
  3. 3.Double 76 =
  4. 4.Double 12 =
  5. 5.Half of 192 =
  6. 6.Double 18 =
  7. 7.Double 47 =
  8. 8.Half of 42 =
  9. 9.Double 49 =
  10. 10.Half of 194 =
  11. 11.Double 41 =
  12. 12.Half of 18 =
  13. 13.Double 77 =
  14. 14.Half of 184 =
  15. 15.Half of 142 =
  16. 16.Half of 178 =
  17. 17.Half of 12 =
  18. 18.Half of 108 =
  19. 19.Double 88 =
  20. 20.Double 21 =
  21. 21.Double 75 =
  22. 22.Half of 156 =
  23. 23.Half of 74 =
  24. 24.Double 91 =
  25. 25.Double 23 =
  26. 26.Half of 128 =
  27. 27.Half of 16 =
  28. 28.Half of 148 =
  29. 29.Half of 104 =
  30. 30.Double 32 =
  31. 31.Double 65 =
  32. 32.Half of 62 =
  33. 33.Half of 56 =
  34. 34.Double 22 =
  35. 35.Double 59 =
  36. 36.Double 25 =
  37. 37.Double 83 =
  38. 38.Double 57 =
  39. 39.Double 61 =
  40. 40.Half of 84 =

Answer key

  1. 26
  2. 76
  3. 152
  4. 24
  5. 96
  6. 36
  7. 94
  8. 21
  9. 98
  10. 97
  11. 82
  12. 9
  13. 154
  14. 92
  15. 71
  16. 89
  17. 6
  18. 54
  19. 176
  20. 42
  21. 150
  22. 78
  23. 37
  24. 182
  25. 46
  26. 64
  27. 8
  28. 74
  29. 52
  30. 64
  31. 130
  32. 31
  33. 28
  34. 44
  35. 118
  36. 50
  37. 166
  38. 114
  39. 122
  40. 42

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