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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 762 · 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.Double 48 =
  2. 2.Double 74 =
  3. 3.Half of 84 =
  4. 4.Half of 122 =
  5. 5.Half of 128 =
  6. 6.Half of 34 =
  7. 7.Double 81 =
  8. 8.Half of 22 =
  9. 9.Double 34 =
  10. 10.Half of 74 =
  11. 11.Half of 48 =
  12. 12.Double 24 =
  13. 13.Half of 132 =
  14. 14.Half of 154 =
  15. 15.Double 44 =
  16. 16.Half of 94 =
  17. 17.Double 52 =
  18. 18.Double 82 =
  19. 19.Half of 36 =
  20. 20.Double 33 =
  21. 21.Half of 32 =
  22. 22.Half of 192 =
  23. 23.Double 91 =
  24. 24.Double 72 =
  25. 25.Double 13 =
  26. 26.Half of 14 =
  27. 27.Double 98 =
  28. 28.Half of 106 =
  29. 29.Double 45 =
  30. 30.Half of 78 =
  31. 31.Half of 44 =
  32. 32.Half of 62 =
  33. 33.Half of 76 =
  34. 34.Half of 172 =
  35. 35.Double 31 =
  36. 36.Double 78 =
  37. 37.Double 23 =
  38. 38.Double 92 =
  39. 39.Double 96 =
  40. 40.Double 83 =

Answer key

  1. 96
  2. 148
  3. 42
  4. 61
  5. 64
  6. 17
  7. 162
  8. 11
  9. 68
  10. 37
  11. 24
  12. 48
  13. 66
  14. 77
  15. 88
  16. 47
  17. 104
  18. 164
  19. 18
  20. 66
  21. 16
  22. 96
  23. 182
  24. 144
  25. 26
  26. 7
  27. 196
  28. 53
  29. 90
  30. 39
  31. 22
  32. 31
  33. 38
  34. 86
  35. 62
  36. 156
  37. 46
  38. 184
  39. 192
  40. 166

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