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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 614 · 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 22 =
  2. 2.Half of 158 =
  3. 3.Double 19 =
  4. 4.Half of 32 =
  5. 5.Half of 92 =
  6. 6.Double 31 =
  7. 7.Half of 102 =
  8. 8.Half of 34 =
  9. 9.Half of 114 =
  10. 10.Double 15 =
  11. 11.Half of 142 =
  12. 12.Half of 24 =
  13. 13.Double 45 =
  14. 14.Double 23 =
  15. 15.Double 77 =
  16. 16.Double 47 =
  17. 17.Double 59 =
  18. 18.Double 91 =
  19. 19.Double 72 =
  20. 20.Half of 66 =
  21. 21.Half of 44 =
  22. 22.Double 68 =
  23. 23.Double 25 =
  24. 24.Double 18 =
  25. 25.Half of 96 =
  26. 26.Double 17 =
  27. 27.Half of 48 =
  28. 28.Double 93 =
  29. 29.Half of 28 =
  30. 30.Half of 164 =
  31. 31.Double 12 =
  32. 32.Double 92 =
  33. 33.Double 26 =
  34. 34.Double 48 =
  35. 35.Double 61 =
  36. 36.Double 66 =
  37. 37.Half of 188 =
  38. 38.Half of 26 =
  39. 39.Half of 194 =
  40. 40.Half of 178 =

Answer key

  1. 11
  2. 79
  3. 38
  4. 16
  5. 46
  6. 62
  7. 51
  8. 17
  9. 57
  10. 30
  11. 71
  12. 12
  13. 90
  14. 46
  15. 154
  16. 94
  17. 118
  18. 182
  19. 144
  20. 33
  21. 22
  22. 136
  23. 50
  24. 36
  25. 48
  26. 34
  27. 24
  28. 186
  29. 14
  30. 82
  31. 24
  32. 184
  33. 52
  34. 96
  35. 122
  36. 132
  37. 94
  38. 13
  39. 97
  40. 89

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