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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 202 · 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.Double 56 =
  2. 2.Double 81 =
  3. 3.Half of 32 =
  4. 4.Half of 22 =
  5. 5.Half of 162 =
  6. 6.Double 42 =
  7. 7.Double 91 =
  8. 8.Double 16 =
  9. 9.Double 94 =
  10. 10.Half of 108 =
  11. 11.Double 73 =
  12. 12.Half of 194 =
  13. 13.Half of 78 =
  14. 14.Half of 48 =
  15. 15.Double 54 =
  16. 16.Half of 94 =
  17. 17.Half of 44 =
  18. 18.Double 26 =
  19. 19.Double 33 =
  20. 20.Half of 168 =
  21. 21.Double 67 =
  22. 22.Double 78 =
  23. 23.Half of 114 =
  24. 24.Double 65 =
  25. 25.Half of 176 =
  26. 26.Half of 126 =
  27. 27.Half of 12 =
  28. 28.Half of 174 =
  29. 29.Double 71 =
  30. 30.Double 14 =
  31. 31.Double 41 =
  32. 32.Half of 96 =
  33. 33.Half of 182 =
  34. 34.Double 58 =
  35. 35.Half of 112 =
  36. 36.Double 27 =
  37. 37.Double 49 =
  38. 38.Half of 82 =
  39. 39.Double 79 =
  40. 40.Half of 72 =

Answer key

  1. 112
  2. 162
  3. 16
  4. 11
  5. 81
  6. 84
  7. 182
  8. 32
  9. 188
  10. 54
  11. 146
  12. 97
  13. 39
  14. 24
  15. 108
  16. 47
  17. 22
  18. 52
  19. 66
  20. 84
  21. 134
  22. 156
  23. 57
  24. 130
  25. 88
  26. 63
  27. 6
  28. 87
  29. 142
  30. 28
  31. 82
  32. 48
  33. 91
  34. 116
  35. 56
  36. 54
  37. 98
  38. 41
  39. 158
  40. 36

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