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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 468 · 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 114 =
  2. 2.Half of 54 =
  3. 3.Double 78 =
  4. 4.Half of 178 =
  5. 5.Double 51 =
  6. 6.Double 48 =
  7. 7.Double 38 =
  8. 8.Double 23 =
  9. 9.Half of 198 =
  10. 10.Double 73 =
  11. 11.Double 11 =
  12. 12.Double 91 =
  13. 13.Half of 112 =
  14. 14.Double 21 =
  15. 15.Double 72 =
  16. 16.Double 81 =
  17. 17.Half of 74 =
  18. 18.Half of 172 =
  19. 19.Half of 104 =
  20. 20.Double 54 =
  21. 21.Half of 42 =
  22. 22.Double 43 =
  23. 23.Double 82 =
  24. 24.Half of 148 =
  25. 25.Half of 76 =
  26. 26.Half of 122 =
  27. 27.Double 94 =
  28. 28.Half of 24 =
  29. 29.Half of 184 =
  30. 30.Half of 162 =
  31. 31.Double 67 =
  32. 32.Half of 192 =
  33. 33.Half of 182 =
  34. 34.Half of 142 =
  35. 35.Double 44 =
  36. 36.Half of 22 =
  37. 37.Double 35 =
  38. 38.Double 75 =
  39. 39.Half of 46 =
  40. 40.Half of 78 =

Answer key

  1. 57
  2. 27
  3. 156
  4. 89
  5. 102
  6. 96
  7. 76
  8. 46
  9. 99
  10. 146
  11. 22
  12. 182
  13. 56
  14. 42
  15. 144
  16. 162
  17. 37
  18. 86
  19. 52
  20. 108
  21. 21
  22. 86
  23. 164
  24. 74
  25. 38
  26. 61
  27. 188
  28. 12
  29. 92
  30. 81
  31. 134
  32. 96
  33. 91
  34. 71
  35. 88
  36. 11
  37. 70
  38. 150
  39. 23
  40. 39

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