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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 231 · 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 148 =
  2. 2.Double 22 =
  3. 3.Half of 52 =
  4. 4.Half of 146 =
  5. 5.Double 63 =
  6. 6.Double 66 =
  7. 7.Double 32 =
  8. 8.Double 78 =
  9. 9.Double 49 =
  10. 10.Half of 106 =
  11. 11.Half of 112 =
  12. 12.Half of 178 =
  13. 13.Half of 116 =
  14. 14.Double 47 =
  15. 15.Double 69 =
  16. 16.Half of 46 =
  17. 17.Half of 194 =
  18. 18.Double 76 =
  19. 19.Half of 186 =
  20. 20.Double 13 =
  21. 21.Half of 156 =
  22. 22.Half of 62 =
  23. 23.Double 91 =
  24. 24.Half of 198 =
  25. 25.Half of 48 =
  26. 26.Double 41 =
  27. 27.Half of 92 =
  28. 28.Half of 144 =
  29. 29.Half of 196 =
  30. 30.Half of 104 =
  31. 31.Half of 74 =
  32. 32.Half of 38 =
  33. 33.Half of 82 =
  34. 34.Double 15 =
  35. 35.Half of 134 =
  36. 36.Half of 102 =
  37. 37.Half of 78 =
  38. 38.Double 23 =
  39. 39.Double 34 =
  40. 40.Double 33 =

Answer key

  1. 74
  2. 44
  3. 26
  4. 73
  5. 126
  6. 132
  7. 64
  8. 156
  9. 98
  10. 53
  11. 56
  12. 89
  13. 58
  14. 94
  15. 138
  16. 23
  17. 97
  18. 152
  19. 93
  20. 26
  21. 78
  22. 31
  23. 182
  24. 99
  25. 24
  26. 82
  27. 46
  28. 72
  29. 98
  30. 52
  31. 37
  32. 19
  33. 41
  34. 30
  35. 67
  36. 51
  37. 39
  38. 46
  39. 68
  40. 66

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