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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 813 · 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 88 =
  2. 2.Double 94 =
  3. 3.Double 98 =
  4. 4.Double 71 =
  5. 5.Double 69 =
  6. 6.Half of 52 =
  7. 7.Half of 138 =
  8. 8.Half of 194 =
  9. 9.Double 31 =
  10. 10.Half of 68 =
  11. 11.Half of 166 =
  12. 12.Double 85 =
  13. 13.Half of 178 =
  14. 14.Half of 186 =
  15. 15.Double 96 =
  16. 16.Double 34 =
  17. 17.Double 82 =
  18. 18.Double 49 =
  19. 19.Half of 44 =
  20. 20.Half of 62 =
  21. 21.Half of 58 =
  22. 22.Half of 116 =
  23. 23.Double 51 =
  24. 24.Double 22 =
  25. 25.Double 64 =
  26. 26.Double 55 =
  27. 27.Double 29 =
  28. 28.Half of 164 =
  29. 29.Double 67 =
  30. 30.Half of 182 =
  31. 31.Double 79 =
  32. 32.Double 41 =
  33. 33.Double 91 =
  34. 34.Double 59 =
  35. 35.Double 27 =
  36. 36.Half of 158 =
  37. 37.Half of 72 =
  38. 38.Half of 34 =
  39. 39.Double 32 =
  40. 40.Double 21 =

Answer key

  1. 44
  2. 188
  3. 196
  4. 142
  5. 138
  6. 26
  7. 69
  8. 97
  9. 62
  10. 34
  11. 83
  12. 170
  13. 89
  14. 93
  15. 192
  16. 68
  17. 164
  18. 98
  19. 22
  20. 31
  21. 29
  22. 58
  23. 102
  24. 44
  25. 128
  26. 110
  27. 58
  28. 82
  29. 134
  30. 91
  31. 158
  32. 82
  33. 182
  34. 118
  35. 54
  36. 79
  37. 36
  38. 17
  39. 64
  40. 42

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