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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 70 · 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 29 =
  2. 2.Double 44 =
  3. 3.Half of 64 =
  4. 4.Half of 138 =
  5. 5.Double 69 =
  6. 6.Half of 32 =
  7. 7.Double 34 =
  8. 8.Double 82 =
  9. 9.Half of 134 =
  10. 10.Double 31 =
  11. 11.Double 78 =
  12. 12.Double 91 =
  13. 13.Half of 54 =
  14. 14.Double 22 =
  15. 15.Half of 78 =
  16. 16.Half of 114 =
  17. 17.Half of 14 =
  18. 18.Half of 172 =
  19. 19.Double 51 =
  20. 20.Double 49 =
  21. 21.Double 95 =
  22. 22.Half of 36 =
  23. 23.Double 86 =
  24. 24.Half of 182 =
  25. 25.Double 23 =
  26. 26.Double 19 =
  27. 27.Half of 96 =
  28. 28.Double 81 =
  29. 29.Half of 184 =
  30. 30.Double 41 =
  31. 31.Half of 136 =
  32. 32.Half of 198 =
  33. 33.Half of 16 =
  34. 34.Half of 92 =
  35. 35.Double 63 =
  36. 36.Double 76 =
  37. 37.Double 68 =
  38. 38.Half of 72 =
  39. 39.Half of 12 =
  40. 40.Half of 162 =

Answer key

  1. 58
  2. 88
  3. 32
  4. 69
  5. 138
  6. 16
  7. 68
  8. 164
  9. 67
  10. 62
  11. 156
  12. 182
  13. 27
  14. 44
  15. 39
  16. 57
  17. 7
  18. 86
  19. 102
  20. 98
  21. 190
  22. 18
  23. 172
  24. 91
  25. 46
  26. 38
  27. 48
  28. 162
  29. 92
  30. 82
  31. 68
  32. 99
  33. 8
  34. 46
  35. 126
  36. 152
  37. 136
  38. 36
  39. 6
  40. 81

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