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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 726 · 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 154 =
  2. 2.Half of 168 =
  3. 3.Half of 162 =
  4. 4.Double 76 =
  5. 5.Double 51 =
  6. 6.Half of 18 =
  7. 7.Double 19 =
  8. 8.Double 91 =
  9. 9.Half of 32 =
  10. 10.Half of 102 =
  11. 11.Half of 72 =
  12. 12.Double 99 =
  13. 13.Double 57 =
  14. 14.Double 18 =
  15. 15.Double 74 =
  16. 16.Half of 172 =
  17. 17.Half of 14 =
  18. 18.Half of 64 =
  19. 19.Double 47 =
  20. 20.Double 55 =
  21. 21.Double 43 =
  22. 22.Double 41 =
  23. 23.Half of 98 =
  24. 24.Half of 52 =
  25. 25.Half of 124 =
  26. 26.Double 14 =
  27. 27.Half of 62 =
  28. 28.Half of 28 =
  29. 29.Half of 42 =
  30. 30.Double 17 =
  31. 31.Double 82 =
  32. 32.Double 33 =
  33. 33.Double 49 =
  34. 34.Double 42 =
  35. 35.Half of 106 =
  36. 36.Half of 192 =
  37. 37.Double 69 =
  38. 38.Double 34 =
  39. 39.Double 92 =
  40. 40.Half of 116 =

Answer key

  1. 77
  2. 84
  3. 81
  4. 152
  5. 102
  6. 9
  7. 38
  8. 182
  9. 16
  10. 51
  11. 36
  12. 198
  13. 114
  14. 36
  15. 148
  16. 86
  17. 7
  18. 32
  19. 94
  20. 110
  21. 86
  22. 82
  23. 49
  24. 26
  25. 62
  26. 28
  27. 31
  28. 14
  29. 21
  30. 34
  31. 164
  32. 66
  33. 98
  34. 84
  35. 53
  36. 96
  37. 138
  38. 68
  39. 184
  40. 58

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