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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 35 · 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 63 =
  2. 2.Half of 184 =
  3. 3.Double 34 =
  4. 4.Half of 62 =
  5. 5.Half of 194 =
  6. 6.Half of 182 =
  7. 7.Half of 54 =
  8. 8.Double 24 =
  9. 9.Double 71 =
  10. 10.Double 43 =
  11. 11.Double 95 =
  12. 12.Half of 82 =
  13. 13.Double 26 =
  14. 14.Half of 98 =
  15. 15.Double 23 =
  16. 16.Half of 16 =
  17. 17.Double 41 =
  18. 18.Half of 52 =
  19. 19.Double 19 =
  20. 20.Double 65 =
  21. 21.Double 64 =
  22. 22.Double 11 =
  23. 23.Double 57 =
  24. 24.Half of 118 =
  25. 25.Double 91 =
  26. 26.Double 38 =
  27. 27.Double 35 =
  28. 28.Half of 84 =
  29. 29.Double 61 =
  30. 30.Half of 42 =
  31. 31.Half of 192 =
  32. 32.Double 12 =
  33. 33.Half of 148 =
  34. 34.Double 32 =
  35. 35.Double 67 =
  36. 36.Half of 116 =
  37. 37.Half of 14 =
  38. 38.Half of 114 =
  39. 39.Double 94 =
  40. 40.Half of 132 =

Answer key

  1. 126
  2. 92
  3. 68
  4. 31
  5. 97
  6. 91
  7. 27
  8. 48
  9. 142
  10. 86
  11. 190
  12. 41
  13. 52
  14. 49
  15. 46
  16. 8
  17. 82
  18. 26
  19. 38
  20. 130
  21. 128
  22. 22
  23. 114
  24. 59
  25. 182
  26. 76
  27. 70
  28. 42
  29. 122
  30. 21
  31. 96
  32. 24
  33. 74
  34. 64
  35. 134
  36. 58
  37. 7
  38. 57
  39. 188
  40. 66

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