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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 365 · 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 132 =
  2. 2.Half of 112 =
  3. 3.Double 68 =
  4. 4.Half of 76 =
  5. 5.Half of 58 =
  6. 6.Half of 42 =
  7. 7.Double 39 =
  8. 8.Double 36 =
  9. 9.Half of 88 =
  10. 10.Half of 134 =
  11. 11.Double 83 =
  12. 12.Double 71 =
  13. 13.Double 55 =
  14. 14.Double 16 =
  15. 15.Double 28 =
  16. 16.Double 95 =
  17. 17.Half of 172 =
  18. 18.Double 76 =
  19. 19.Double 43 =
  20. 20.Double 82 =
  21. 21.Half of 26 =
  22. 22.Double 63 =
  23. 23.Half of 116 =
  24. 24.Half of 98 =
  25. 25.Double 14 =
  26. 26.Double 51 =
  27. 27.Double 31 =
  28. 28.Half of 138 =
  29. 29.Half of 176 =
  30. 30.Half of 38 =
  31. 31.Double 27 =
  32. 32.Double 44 =
  33. 33.Half of 24 =
  34. 34.Double 67 =
  35. 35.Half of 124 =
  36. 36.Half of 184 =
  37. 37.Double 89 =
  38. 38.Half of 118 =
  39. 39.Half of 52 =
  40. 40.Double 88 =

Answer key

  1. 66
  2. 56
  3. 136
  4. 38
  5. 29
  6. 21
  7. 78
  8. 72
  9. 44
  10. 67
  11. 166
  12. 142
  13. 110
  14. 32
  15. 56
  16. 190
  17. 86
  18. 152
  19. 86
  20. 164
  21. 13
  22. 126
  23. 58
  24. 49
  25. 28
  26. 102
  27. 62
  28. 69
  29. 88
  30. 19
  31. 54
  32. 88
  33. 12
  34. 134
  35. 62
  36. 92
  37. 178
  38. 59
  39. 26
  40. 176

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