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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 624 · 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 176 =
  2. 2.Half of 34 =
  3. 3.Half of 14 =
  4. 4.Half of 196 =
  5. 5.Double 74 =
  6. 6.Double 73 =
  7. 7.Double 51 =
  8. 8.Double 78 =
  9. 9.Half of 32 =
  10. 10.Double 56 =
  11. 11.Double 21 =
  12. 12.Half of 162 =
  13. 13.Half of 188 =
  14. 14.Half of 94 =
  15. 15.Half of 62 =
  16. 16.Double 52 =
  17. 17.Double 23 =
  18. 18.Double 77 =
  19. 19.Double 57 =
  20. 20.Double 85 =
  21. 21.Half of 92 =
  22. 22.Half of 46 =
  23. 23.Double 75 =
  24. 24.Half of 52 =
  25. 25.Double 34 =
  26. 26.Double 48 =
  27. 27.Half of 88 =
  28. 28.Half of 132 =
  29. 29.Double 27 =
  30. 30.Double 28 =
  31. 31.Double 31 =
  32. 32.Double 11 =
  33. 33.Double 41 =
  34. 34.Double 32 =
  35. 35.Half of 166 =
  36. 36.Half of 84 =
  37. 37.Half of 148 =
  38. 38.Half of 116 =
  39. 39.Half of 78 =
  40. 40.Double 39 =

Answer key

  1. 88
  2. 17
  3. 7
  4. 98
  5. 148
  6. 146
  7. 102
  8. 156
  9. 16
  10. 112
  11. 42
  12. 81
  13. 94
  14. 47
  15. 31
  16. 104
  17. 46
  18. 154
  19. 114
  20. 170
  21. 46
  22. 23
  23. 150
  24. 26
  25. 68
  26. 96
  27. 44
  28. 66
  29. 54
  30. 56
  31. 62
  32. 22
  33. 82
  34. 64
  35. 83
  36. 42
  37. 74
  38. 58
  39. 39
  40. 78

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