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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 827 · 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 16 =
  3. 3.Half of 162 =
  4. 4.Half of 74 =
  5. 5.Half of 112 =
  6. 6.Half of 42 =
  7. 7.Half of 32 =
  8. 8.Double 51 =
  9. 9.Half of 152 =
  10. 10.Half of 48 =
  11. 11.Half of 166 =
  12. 12.Double 55 =
  13. 13.Double 25 =
  14. 14.Half of 132 =
  15. 15.Half of 24 =
  16. 16.Double 76 =
  17. 17.Half of 188 =
  18. 18.Double 62 =
  19. 19.Half of 72 =
  20. 20.Half of 184 =
  21. 21.Half of 158 =
  22. 22.Double 19 =
  23. 23.Double 97 =
  24. 24.Double 26 =
  25. 25.Double 58 =
  26. 26.Double 12 =
  27. 27.Double 63 =
  28. 28.Double 48 =
  29. 29.Half of 86 =
  30. 30.Double 31 =
  31. 31.Half of 66 =
  32. 32.Half of 18 =
  33. 33.Double 37 =
  34. 34.Double 94 =
  35. 35.Half of 34 =
  36. 36.Half of 106 =
  37. 37.Half of 124 =
  38. 38.Half of 122 =
  39. 39.Half of 144 =
  40. 40.Half of 28 =

Answer key

  1. 26
  2. 32
  3. 81
  4. 37
  5. 56
  6. 21
  7. 16
  8. 102
  9. 76
  10. 24
  11. 83
  12. 110
  13. 50
  14. 66
  15. 12
  16. 152
  17. 94
  18. 124
  19. 36
  20. 92
  21. 79
  22. 38
  23. 194
  24. 52
  25. 116
  26. 24
  27. 126
  28. 96
  29. 43
  30. 62
  31. 33
  32. 9
  33. 74
  34. 188
  35. 17
  36. 53
  37. 62
  38. 61
  39. 72
  40. 14

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