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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 626 · 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 32 =
  2. 2.Double 46 =
  3. 3.Double 31 =
  4. 4.Double 55 =
  5. 5.Half of 182 =
  6. 6.Half of 148 =
  7. 7.Half of 194 =
  8. 8.Half of 34 =
  9. 9.Double 38 =
  10. 10.Double 52 =
  11. 11.Half of 142 =
  12. 12.Half of 102 =
  13. 13.Double 82 =
  14. 14.Double 83 =
  15. 15.Double 11 =
  16. 16.Half of 42 =
  17. 17.Double 93 =
  18. 18.Double 41 =
  19. 19.Double 28 =
  20. 20.Double 17 =
  21. 21.Double 35 =
  22. 22.Half of 66 =
  23. 23.Half of 96 =
  24. 24.Double 19 =
  25. 25.Double 22 =
  26. 26.Double 86 =
  27. 27.Half of 184 =
  28. 28.Half of 124 =
  29. 29.Half of 22 =
  30. 30.Half of 86 =
  31. 31.Double 36 =
  32. 32.Half of 192 =
  33. 33.Half of 48 =
  34. 34.Half of 118 =
  35. 35.Double 68 =
  36. 36.Half of 52 =
  37. 37.Half of 104 =
  38. 38.Double 67 =
  39. 39.Half of 106 =
  40. 40.Double 66 =

Answer key

  1. 16
  2. 92
  3. 62
  4. 110
  5. 91
  6. 74
  7. 97
  8. 17
  9. 76
  10. 104
  11. 71
  12. 51
  13. 164
  14. 166
  15. 22
  16. 21
  17. 186
  18. 82
  19. 56
  20. 34
  21. 70
  22. 33
  23. 48
  24. 38
  25. 44
  26. 172
  27. 92
  28. 62
  29. 11
  30. 43
  31. 72
  32. 96
  33. 24
  34. 59
  35. 136
  36. 26
  37. 52
  38. 134
  39. 53
  40. 132

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