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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 344 · 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 76 =
  2. 2.Half of 122 =
  3. 3.Double 56 =
  4. 4.Half of 64 =
  5. 5.Half of 136 =
  6. 6.Half of 104 =
  7. 7.Half of 62 =
  8. 8.Half of 182 =
  9. 9.Double 41 =
  10. 10.Double 96 =
  11. 11.Double 81 =
  12. 12.Half of 34 =
  13. 13.Double 98 =
  14. 14.Half of 152 =
  15. 15.Double 22 =
  16. 16.Double 97 =
  17. 17.Half of 174 =
  18. 18.Double 14 =
  19. 19.Half of 112 =
  20. 20.Half of 102 =
  21. 21.Double 87 =
  22. 22.Double 31 =
  23. 23.Double 89 =
  24. 24.Half of 14 =
  25. 25.Double 11 =
  26. 26.Half of 26 =
  27. 27.Double 44 =
  28. 28.Double 55 =
  29. 29.Double 19 =
  30. 30.Half of 172 =
  31. 31.Double 23 =
  32. 32.Double 69 =
  33. 33.Double 18 =
  34. 34.Half of 142 =
  35. 35.Double 58 =
  36. 36.Half of 58 =
  37. 37.Half of 72 =
  38. 38.Double 91 =
  39. 39.Double 36 =
  40. 40.Half of 132 =

Answer key

  1. 152
  2. 61
  3. 112
  4. 32
  5. 68
  6. 52
  7. 31
  8. 91
  9. 82
  10. 192
  11. 162
  12. 17
  13. 196
  14. 76
  15. 44
  16. 194
  17. 87
  18. 28
  19. 56
  20. 51
  21. 174
  22. 62
  23. 178
  24. 7
  25. 22
  26. 13
  27. 88
  28. 110
  29. 38
  30. 86
  31. 46
  32. 138
  33. 36
  34. 71
  35. 116
  36. 29
  37. 36
  38. 182
  39. 72
  40. 66

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