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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 457 · 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 92 =
  2. 2.Half of 142 =
  3. 3.Double 21 =
  4. 4.Double 89 =
  5. 5.Half of 66 =
  6. 6.Half of 126 =
  7. 7.Half of 118 =
  8. 8.Double 55 =
  9. 9.Double 91 =
  10. 10.Double 11 =
  11. 11.Double 62 =
  12. 12.Half of 174 =
  13. 13.Half of 152 =
  14. 14.Half of 38 =
  15. 15.Double 72 =
  16. 16.Double 41 =
  17. 17.Double 71 =
  18. 18.Double 79 =
  19. 19.Double 95 =
  20. 20.Double 84 =
  21. 21.Double 81 =
  22. 22.Half of 136 =
  23. 23.Half of 52 =
  24. 24.Half of 34 =
  25. 25.Half of 192 =
  26. 26.Half of 166 =
  27. 27.Double 76 =
  28. 28.Double 22 =
  29. 29.Double 16 =
  30. 30.Double 38 =
  31. 31.Double 97 =
  32. 32.Half of 36 =
  33. 33.Double 52 =
  34. 34.Half of 74 =
  35. 35.Half of 32 =
  36. 36.Half of 16 =
  37. 37.Half of 58 =
  38. 38.Half of 22 =
  39. 39.Double 35 =
  40. 40.Double 37 =

Answer key

  1. 46
  2. 71
  3. 42
  4. 178
  5. 33
  6. 63
  7. 59
  8. 110
  9. 182
  10. 22
  11. 124
  12. 87
  13. 76
  14. 19
  15. 144
  16. 82
  17. 142
  18. 158
  19. 190
  20. 168
  21. 162
  22. 68
  23. 26
  24. 17
  25. 96
  26. 83
  27. 152
  28. 44
  29. 32
  30. 76
  31. 194
  32. 18
  33. 104
  34. 37
  35. 16
  36. 8
  37. 29
  38. 11
  39. 70
  40. 74

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