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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 158 · 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 63 =
  2. 2.Half of 176 =
  3. 3.Double 25 =
  4. 4.Half of 22 =
  5. 5.Half of 26 =
  6. 6.Half of 38 =
  7. 7.Double 81 =
  8. 8.Half of 44 =
  9. 9.Double 45 =
  10. 10.Double 36 =
  11. 11.Double 23 =
  12. 12.Half of 42 =
  13. 13.Double 29 =
  14. 14.Half of 72 =
  15. 15.Half of 108 =
  16. 16.Double 19 =
  17. 17.Half of 152 =
  18. 18.Double 71 =
  19. 19.Double 15 =
  20. 20.Double 24 =
  21. 21.Double 94 =
  22. 22.Half of 64 =
  23. 23.Half of 24 =
  24. 24.Double 31 =
  25. 25.Half of 18 =
  26. 26.Half of 112 =
  27. 27.Double 37 =
  28. 28.Half of 186 =
  29. 29.Double 26 =
  30. 30.Half of 114 =
  31. 31.Double 46 =
  32. 32.Half of 32 =
  33. 33.Double 75 =
  34. 34.Double 66 =
  35. 35.Double 77 =
  36. 36.Half of 48 =
  37. 37.Double 91 =
  38. 38.Double 32 =
  39. 39.Double 54 =
  40. 40.Half of 158 =

Answer key

  1. 126
  2. 88
  3. 50
  4. 11
  5. 13
  6. 19
  7. 162
  8. 22
  9. 90
  10. 72
  11. 46
  12. 21
  13. 58
  14. 36
  15. 54
  16. 38
  17. 76
  18. 142
  19. 30
  20. 48
  21. 188
  22. 32
  23. 12
  24. 62
  25. 9
  26. 56
  27. 74
  28. 93
  29. 52
  30. 57
  31. 92
  32. 16
  33. 150
  34. 132
  35. 154
  36. 24
  37. 182
  38. 64
  39. 108
  40. 79

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