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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 715 · 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 48 =
  2. 2.Double 77 =
  3. 3.Double 75 =
  4. 4.Half of 34 =
  5. 5.Half of 58 =
  6. 6.Double 52 =
  7. 7.Double 62 =
  8. 8.Half of 98 =
  9. 9.Double 71 =
  10. 10.Double 12 =
  11. 11.Double 29 =
  12. 12.Double 78 =
  13. 13.Double 24 =
  14. 14.Half of 54 =
  15. 15.Half of 132 =
  16. 16.Half of 104 =
  17. 17.Half of 178 =
  18. 18.Half of 116 =
  19. 19.Half of 52 =
  20. 20.Double 18 =
  21. 21.Half of 188 =
  22. 22.Half of 106 =
  23. 23.Half of 82 =
  24. 24.Half of 146 =
  25. 25.Half of 64 =
  26. 26.Half of 86 =
  27. 27.Half of 44 =
  28. 28.Half of 122 =
  29. 29.Half of 172 =
  30. 30.Double 35 =
  31. 31.Double 16 =
  32. 32.Half of 154 =
  33. 33.Half of 38 =
  34. 34.Double 85 =
  35. 35.Double 51 =
  36. 36.Double 46 =
  37. 37.Half of 84 =
  38. 38.Half of 192 =
  39. 39.Half of 14 =
  40. 40.Double 92 =

Answer key

  1. 96
  2. 154
  3. 150
  4. 17
  5. 29
  6. 104
  7. 124
  8. 49
  9. 142
  10. 24
  11. 58
  12. 156
  13. 48
  14. 27
  15. 66
  16. 52
  17. 89
  18. 58
  19. 26
  20. 36
  21. 94
  22. 53
  23. 41
  24. 73
  25. 32
  26. 43
  27. 22
  28. 61
  29. 86
  30. 70
  31. 32
  32. 77
  33. 19
  34. 170
  35. 102
  36. 92
  37. 42
  38. 96
  39. 7
  40. 184

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