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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 556 · 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 102 =
  2. 2.Half of 48 =
  3. 3.Double 27 =
  4. 4.Half of 166 =
  5. 5.Half of 126 =
  6. 6.Double 37 =
  7. 7.Double 22 =
  8. 8.Double 31 =
  9. 9.Double 16 =
  10. 10.Half of 196 =
  11. 11.Double 29 =
  12. 12.Double 34 =
  13. 13.Double 77 =
  14. 14.Half of 146 =
  15. 15.Half of 86 =
  16. 16.Double 58 =
  17. 17.Double 18 =
  18. 18.Half of 46 =
  19. 19.Double 81 =
  20. 20.Half of 22 =
  21. 21.Half of 162 =
  22. 22.Double 23 =
  23. 23.Double 75 =
  24. 24.Half of 66 =
  25. 25.Double 49 =
  26. 26.Double 76 =
  27. 27.Double 94 =
  28. 28.Half of 182 =
  29. 29.Half of 178 =
  30. 30.Half of 24 =
  31. 31.Half of 96 =
  32. 32.Half of 16 =
  33. 33.Half of 36 =
  34. 34.Half of 32 =
  35. 35.Double 61 =
  36. 36.Half of 168 =
  37. 37.Double 13 =
  38. 38.Half of 88 =
  39. 39.Double 51 =
  40. 40.Half of 54 =

Answer key

  1. 51
  2. 24
  3. 54
  4. 83
  5. 63
  6. 74
  7. 44
  8. 62
  9. 32
  10. 98
  11. 58
  12. 68
  13. 154
  14. 73
  15. 43
  16. 116
  17. 36
  18. 23
  19. 162
  20. 11
  21. 81
  22. 46
  23. 150
  24. 33
  25. 98
  26. 152
  27. 188
  28. 91
  29. 89
  30. 12
  31. 48
  32. 8
  33. 18
  34. 16
  35. 122
  36. 84
  37. 26
  38. 44
  39. 102
  40. 27

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