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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 670 · 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 74 =
  2. 2.Half of 16 =
  3. 3.Half of 116 =
  4. 4.Double 19 =
  5. 5.Half of 154 =
  6. 6.Half of 18 =
  7. 7.Half of 196 =
  8. 8.Double 55 =
  9. 9.Double 58 =
  10. 10.Double 26 =
  11. 11.Half of 92 =
  12. 12.Double 28 =
  13. 13.Double 71 =
  14. 14.Double 52 =
  15. 15.Double 96 =
  16. 16.Half of 152 =
  17. 17.Half of 22 =
  18. 18.Half of 72 =
  19. 19.Half of 56 =
  20. 20.Double 68 =
  21. 21.Half of 136 =
  22. 22.Half of 104 =
  23. 23.Double 23 =
  24. 24.Double 75 =
  25. 25.Half of 102 =
  26. 26.Half of 42 =
  27. 27.Half of 24 =
  28. 28.Half of 192 =
  29. 29.Double 85 =
  30. 30.Half of 82 =
  31. 31.Double 27 =
  32. 32.Half of 86 =
  33. 33.Double 95 =
  34. 34.Half of 26 =
  35. 35.Double 17 =
  36. 36.Double 47 =
  37. 37.Half of 44 =
  38. 38.Half of 62 =
  39. 39.Double 69 =
  40. 40.Half of 146 =

Answer key

  1. 37
  2. 8
  3. 58
  4. 38
  5. 77
  6. 9
  7. 98
  8. 110
  9. 116
  10. 52
  11. 46
  12. 56
  13. 142
  14. 104
  15. 192
  16. 76
  17. 11
  18. 36
  19. 28
  20. 136
  21. 68
  22. 52
  23. 46
  24. 150
  25. 51
  26. 21
  27. 12
  28. 96
  29. 170
  30. 41
  31. 54
  32. 43
  33. 190
  34. 13
  35. 34
  36. 94
  37. 22
  38. 31
  39. 138
  40. 73

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