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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 589 · 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 41 =
  2. 2.Half of 112 =
  3. 3.Half of 72 =
  4. 4.Double 83 =
  5. 5.Half of 66 =
  6. 6.Half of 184 =
  7. 7.Half of 94 =
  8. 8.Half of 48 =
  9. 9.Half of 22 =
  10. 10.Double 12 =
  11. 11.Double 14 =
  12. 12.Double 61 =
  13. 13.Double 88 =
  14. 14.Half of 36 =
  15. 15.Double 98 =
  16. 16.Half of 132 =
  17. 17.Double 34 =
  18. 18.Half of 156 =
  19. 19.Half of 74 =
  20. 20.Double 62 =
  21. 21.Double 73 =
  22. 22.Half of 18 =
  23. 23.Double 15 =
  24. 24.Double 28 =
  25. 25.Double 43 =
  26. 26.Half of 126 =
  27. 27.Double 22 =
  28. 28.Half of 196 =
  29. 29.Half of 42 =
  30. 30.Double 24 =
  31. 31.Double 49 =
  32. 32.Half of 32 =
  33. 33.Double 71 =
  34. 34.Double 31 =
  35. 35.Half of 194 =
  36. 36.Half of 12 =
  37. 37.Half of 44 =
  38. 38.Double 84 =
  39. 39.Double 72 =
  40. 40.Double 58 =

Answer key

  1. 82
  2. 56
  3. 36
  4. 166
  5. 33
  6. 92
  7. 47
  8. 24
  9. 11
  10. 24
  11. 28
  12. 122
  13. 176
  14. 18
  15. 196
  16. 66
  17. 68
  18. 78
  19. 37
  20. 124
  21. 146
  22. 9
  23. 30
  24. 56
  25. 86
  26. 63
  27. 44
  28. 98
  29. 21
  30. 48
  31. 98
  32. 16
  33. 142
  34. 62
  35. 97
  36. 6
  37. 22
  38. 168
  39. 144
  40. 116

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