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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 339 · 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 82 =
  2. 2.Half of 132 =
  3. 3.Half of 162 =
  4. 4.Double 45 =
  5. 5.Half of 56 =
  6. 6.Double 91 =
  7. 7.Half of 76 =
  8. 8.Double 33 =
  9. 9.Half of 134 =
  10. 10.Half of 32 =
  11. 11.Double 59 =
  12. 12.Half of 104 =
  13. 13.Double 44 =
  14. 14.Double 96 =
  15. 15.Double 54 =
  16. 16.Double 57 =
  17. 17.Half of 22 =
  18. 18.Half of 46 =
  19. 19.Double 47 =
  20. 20.Half of 98 =
  21. 21.Half of 94 =
  22. 22.Double 81 =
  23. 23.Double 92 =
  24. 24.Half of 38 =
  25. 25.Half of 78 =
  26. 26.Double 79 =
  27. 27.Half of 62 =
  28. 28.Half of 88 =
  29. 29.Half of 28 =
  30. 30.Half of 124 =
  31. 31.Double 34 =
  32. 32.Half of 96 =
  33. 33.Half of 182 =
  34. 34.Half of 52 =
  35. 35.Double 87 =
  36. 36.Double 86 =
  37. 37.Half of 138 =
  38. 38.Double 41 =
  39. 39.Double 26 =
  40. 40.Half of 188 =

Answer key

  1. 41
  2. 66
  3. 81
  4. 90
  5. 28
  6. 182
  7. 38
  8. 66
  9. 67
  10. 16
  11. 118
  12. 52
  13. 88
  14. 192
  15. 108
  16. 114
  17. 11
  18. 23
  19. 94
  20. 49
  21. 47
  22. 162
  23. 184
  24. 19
  25. 39
  26. 158
  27. 31
  28. 44
  29. 14
  30. 62
  31. 68
  32. 48
  33. 91
  34. 26
  35. 174
  36. 172
  37. 69
  38. 82
  39. 52
  40. 94

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