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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 661 · 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 32 =
  2. 2.Double 48 =
  3. 3.Double 59 =
  4. 4.Half of 64 =
  5. 5.Half of 84 =
  6. 6.Half of 78 =
  7. 7.Double 94 =
  8. 8.Double 68 =
  9. 9.Half of 136 =
  10. 10.Half of 72 =
  11. 11.Double 32 =
  12. 12.Double 83 =
  13. 13.Double 49 =
  14. 14.Double 33 =
  15. 15.Half of 12 =
  16. 16.Double 81 =
  17. 17.Double 25 =
  18. 18.Half of 76 =
  19. 19.Double 64 =
  20. 20.Half of 182 =
  21. 21.Half of 92 =
  22. 22.Double 15 =
  23. 23.Half of 128 =
  24. 24.Double 37 =
  25. 25.Half of 98 =
  26. 26.Double 91 =
  27. 27.Double 58 =
  28. 28.Half of 18 =
  29. 29.Half of 188 =
  30. 30.Double 77 =
  31. 31.Half of 152 =
  32. 32.Half of 194 =
  33. 33.Half of 48 =
  34. 34.Double 97 =
  35. 35.Double 54 =
  36. 36.Double 62 =
  37. 37.Double 57 =
  38. 38.Double 66 =
  39. 39.Double 43 =
  40. 40.Half of 54 =

Answer key

  1. 16
  2. 96
  3. 118
  4. 32
  5. 42
  6. 39
  7. 188
  8. 136
  9. 68
  10. 36
  11. 64
  12. 166
  13. 98
  14. 66
  15. 6
  16. 162
  17. 50
  18. 38
  19. 128
  20. 91
  21. 46
  22. 30
  23. 64
  24. 74
  25. 49
  26. 182
  27. 116
  28. 9
  29. 94
  30. 154
  31. 76
  32. 97
  33. 24
  34. 194
  35. 108
  36. 124
  37. 114
  38. 132
  39. 86
  40. 27

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