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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 453 · 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.Double 27 =
  3. 3.Half of 122 =
  4. 4.Half of 112 =
  5. 5.Double 74 =
  6. 6.Double 76 =
  7. 7.Half of 42 =
  8. 8.Half of 96 =
  9. 9.Double 19 =
  10. 10.Half of 82 =
  11. 11.Half of 196 =
  12. 12.Half of 154 =
  13. 13.Half of 24 =
  14. 14.Half of 138 =
  15. 15.Double 31 =
  16. 16.Double 25 =
  17. 17.Double 37 =
  18. 18.Double 61 =
  19. 19.Half of 72 =
  20. 20.Half of 158 =
  21. 21.Half of 48 =
  22. 22.Double 29 =
  23. 23.Half of 92 =
  24. 24.Half of 76 =
  25. 25.Half of 16 =
  26. 26.Double 97 =
  27. 27.Half of 32 =
  28. 28.Double 48 =
  29. 29.Double 95 =
  30. 30.Double 72 =
  31. 31.Double 35 =
  32. 32.Half of 114 =
  33. 33.Half of 176 =
  34. 34.Half of 152 =
  35. 35.Double 92 =
  36. 36.Half of 54 =
  37. 37.Double 32 =
  38. 38.Double 69 =
  39. 39.Half of 46 =
  40. 40.Double 98 =

Answer key

  1. 72
  2. 54
  3. 61
  4. 56
  5. 148
  6. 152
  7. 21
  8. 48
  9. 38
  10. 41
  11. 98
  12. 77
  13. 12
  14. 69
  15. 62
  16. 50
  17. 74
  18. 122
  19. 36
  20. 79
  21. 24
  22. 58
  23. 46
  24. 38
  25. 8
  26. 194
  27. 16
  28. 96
  29. 190
  30. 144
  31. 70
  32. 57
  33. 88
  34. 76
  35. 184
  36. 27
  37. 64
  38. 138
  39. 23
  40. 196

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