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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 67 · 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 174 =
  2. 2.Double 36 =
  3. 3.Double 71 =
  4. 4.Half of 186 =
  5. 5.Double 33 =
  6. 6.Half of 122 =
  7. 7.Double 67 =
  8. 8.Double 92 =
  9. 9.Half of 64 =
  10. 10.Half of 134 =
  11. 11.Double 37 =
  12. 12.Double 62 =
  13. 13.Double 85 =
  14. 14.Half of 66 =
  15. 15.Half of 82 =
  16. 16.Double 42 =
  17. 17.Double 98 =
  18. 18.Half of 124 =
  19. 19.Half of 182 =
  20. 20.Half of 144 =
  21. 21.Double 14 =
  22. 22.Double 93 =
  23. 23.Half of 192 =
  24. 24.Half of 24 =
  25. 25.Double 35 =
  26. 26.Half of 118 =
  27. 27.Double 49 =
  28. 28.Double 27 =
  29. 29.Half of 22 =
  30. 30.Double 22 =
  31. 31.Double 43 =
  32. 32.Half of 74 =
  33. 33.Double 52 =
  34. 34.Double 58 =
  35. 35.Half of 78 =
  36. 36.Half of 102 =
  37. 37.Double 97 =
  38. 38.Double 55 =
  39. 39.Half of 52 =
  40. 40.Half of 86 =

Answer key

  1. 87
  2. 72
  3. 142
  4. 93
  5. 66
  6. 61
  7. 134
  8. 184
  9. 32
  10. 67
  11. 74
  12. 124
  13. 170
  14. 33
  15. 41
  16. 84
  17. 196
  18. 62
  19. 91
  20. 72
  21. 28
  22. 186
  23. 96
  24. 12
  25. 70
  26. 59
  27. 98
  28. 54
  29. 11
  30. 44
  31. 86
  32. 37
  33. 104
  34. 116
  35. 39
  36. 51
  37. 194
  38. 110
  39. 26
  40. 43

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