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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 153 · 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 144 =
  2. 2.Half of 176 =
  3. 3.Double 52 =
  4. 4.Double 34 =
  5. 5.Double 44 =
  6. 6.Half of 18 =
  7. 7.Double 45 =
  8. 8.Half of 22 =
  9. 9.Half of 72 =
  10. 10.Double 41 =
  11. 11.Double 66 =
  12. 12.Double 81 =
  13. 13.Double 12 =
  14. 14.Double 86 =
  15. 15.Half of 162 =
  16. 16.Half of 112 =
  17. 17.Double 26 =
  18. 18.Half of 26 =
  19. 19.Half of 56 =
  20. 20.Double 21 =
  21. 21.Half of 68 =
  22. 22.Double 75 =
  23. 23.Double 18 =
  24. 24.Double 92 =
  25. 25.Double 51 =
  26. 26.Double 39 =
  27. 27.Half of 186 =
  28. 28.Half of 96 =
  29. 29.Double 33 =
  30. 30.Half of 132 =
  31. 31.Half of 86 =
  32. 32.Double 71 =
  33. 33.Half of 154 =
  34. 34.Double 35 =
  35. 35.Double 89 =
  36. 36.Half of 122 =
  37. 37.Double 17 =
  38. 38.Half of 116 =
  39. 39.Half of 194 =
  40. 40.Double 38 =

Answer key

  1. 72
  2. 88
  3. 104
  4. 68
  5. 88
  6. 9
  7. 90
  8. 11
  9. 36
  10. 82
  11. 132
  12. 162
  13. 24
  14. 172
  15. 81
  16. 56
  17. 52
  18. 13
  19. 28
  20. 42
  21. 34
  22. 150
  23. 36
  24. 184
  25. 102
  26. 78
  27. 93
  28. 48
  29. 66
  30. 66
  31. 43
  32. 142
  33. 77
  34. 70
  35. 178
  36. 61
  37. 34
  38. 58
  39. 97
  40. 76

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