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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 385 · 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 18 =
  2. 2.Double 45 =
  3. 3.Half of 172 =
  4. 4.Half of 56 =
  5. 5.Double 34 =
  6. 6.Double 89 =
  7. 7.Half of 102 =
  8. 8.Double 66 =
  9. 9.Half of 54 =
  10. 10.Double 68 =
  11. 11.Double 48 =
  12. 12.Half of 58 =
  13. 13.Half of 168 =
  14. 14.Double 41 =
  15. 15.Half of 14 =
  16. 16.Double 61 =
  17. 17.Half of 152 =
  18. 18.Double 16 =
  19. 19.Half of 194 =
  20. 20.Half of 44 =
  21. 21.Double 23 =
  22. 22.Half of 104 =
  23. 23.Double 19 =
  24. 24.Double 31 =
  25. 25.Double 54 =
  26. 26.Half of 182 =
  27. 27.Double 94 =
  28. 28.Half of 74 =
  29. 29.Double 88 =
  30. 30.Double 51 =
  31. 31.Double 55 =
  32. 32.Double 17 =
  33. 33.Half of 112 =
  34. 34.Half of 162 =
  35. 35.Double 43 =
  36. 36.Double 42 =
  37. 37.Double 27 =
  38. 38.Half of 16 =
  39. 39.Double 77 =
  40. 40.Half of 26 =

Answer key

  1. 36
  2. 90
  3. 86
  4. 28
  5. 68
  6. 178
  7. 51
  8. 132
  9. 27
  10. 136
  11. 96
  12. 29
  13. 84
  14. 82
  15. 7
  16. 122
  17. 76
  18. 32
  19. 97
  20. 22
  21. 46
  22. 52
  23. 38
  24. 62
  25. 108
  26. 91
  27. 188
  28. 37
  29. 176
  30. 102
  31. 110
  32. 34
  33. 56
  34. 81
  35. 86
  36. 84
  37. 54
  38. 8
  39. 154
  40. 13

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