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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 92 · 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 198 =
  2. 2.Double 71 =
  3. 3.Half of 18 =
  4. 4.Half of 136 =
  5. 5.Double 24 =
  6. 6.Double 27 =
  7. 7.Double 25 =
  8. 8.Double 58 =
  9. 9.Double 21 =
  10. 10.Double 52 =
  11. 11.Half of 92 =
  12. 12.Double 69 =
  13. 13.Double 19 =
  14. 14.Double 33 =
  15. 15.Half of 172 =
  16. 16.Half of 16 =
  17. 17.Half of 176 =
  18. 18.Double 15 =
  19. 19.Half of 146 =
  20. 20.Half of 46 =
  21. 21.Double 73 =
  22. 22.Half of 102 =
  23. 23.Double 41 =
  24. 24.Half of 152 =
  25. 25.Half of 104 =
  26. 26.Half of 78 =
  27. 27.Double 87 =
  28. 28.Half of 76 =
  29. 29.Half of 114 =
  30. 30.Half of 118 =
  31. 31.Double 47 =
  32. 32.Half of 182 =
  33. 33.Half of 86 =
  34. 34.Double 29 =
  35. 35.Double 96 =
  36. 36.Half of 106 =
  37. 37.Half of 12 =
  38. 38.Half of 64 =
  39. 39.Half of 162 =
  40. 40.Double 76 =

Answer key

  1. 99
  2. 142
  3. 9
  4. 68
  5. 48
  6. 54
  7. 50
  8. 116
  9. 42
  10. 104
  11. 46
  12. 138
  13. 38
  14. 66
  15. 86
  16. 8
  17. 88
  18. 30
  19. 73
  20. 23
  21. 146
  22. 51
  23. 82
  24. 76
  25. 52
  26. 39
  27. 174
  28. 38
  29. 57
  30. 59
  31. 94
  32. 91
  33. 43
  34. 58
  35. 192
  36. 53
  37. 6
  38. 32
  39. 81
  40. 152

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