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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 716 · 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 36 =
  2. 2.Half of 146 =
  3. 3.Double 29 =
  4. 4.Half of 22 =
  5. 5.Double 51 =
  6. 6.Double 37 =
  7. 7.Double 49 =
  8. 8.Half of 106 =
  9. 9.Double 91 =
  10. 10.Double 93 =
  11. 11.Double 89 =
  12. 12.Half of 96 =
  13. 13.Half of 54 =
  14. 14.Half of 46 =
  15. 15.Half of 122 =
  16. 16.Half of 92 =
  17. 17.Double 84 =
  18. 18.Half of 172 =
  19. 19.Double 62 =
  20. 20.Double 24 =
  21. 21.Half of 182 =
  22. 22.Double 74 =
  23. 23.Double 73 =
  24. 24.Half of 174 =
  25. 25.Double 39 =
  26. 26.Half of 44 =
  27. 27.Half of 126 =
  28. 28.Double 88 =
  29. 29.Double 99 =
  30. 30.Double 14 =
  31. 31.Double 25 =
  32. 32.Half of 86 =
  33. 33.Half of 152 =
  34. 34.Double 55 =
  35. 35.Half of 36 =
  36. 36.Half of 162 =
  37. 37.Half of 104 =
  38. 38.Double 83 =
  39. 39.Double 81 =
  40. 40.Double 22 =

Answer key

  1. 72
  2. 73
  3. 58
  4. 11
  5. 102
  6. 74
  7. 98
  8. 53
  9. 182
  10. 186
  11. 178
  12. 48
  13. 27
  14. 23
  15. 61
  16. 46
  17. 168
  18. 86
  19. 124
  20. 48
  21. 91
  22. 148
  23. 146
  24. 87
  25. 78
  26. 22
  27. 63
  28. 176
  29. 198
  30. 28
  31. 50
  32. 43
  33. 76
  34. 110
  35. 18
  36. 81
  37. 52
  38. 166
  39. 162
  40. 44

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