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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 484 · 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 86 =
  2. 2.Double 46 =
  3. 3.Double 95 =
  4. 4.Half of 68 =
  5. 5.Half of 174 =
  6. 6.Half of 102 =
  7. 7.Half of 152 =
  8. 8.Half of 36 =
  9. 9.Double 43 =
  10. 10.Half of 62 =
  11. 11.Half of 112 =
  12. 12.Double 52 =
  13. 13.Half of 132 =
  14. 14.Double 71 =
  15. 15.Double 81 =
  16. 16.Half of 48 =
  17. 17.Half of 78 =
  18. 18.Double 16 =
  19. 19.Double 21 =
  20. 20.Double 54 =
  21. 21.Half of 52 =
  22. 22.Double 84 =
  23. 23.Double 49 =
  24. 24.Half of 188 =
  25. 25.Double 25 =
  26. 26.Half of 34 =
  27. 27.Half of 116 =
  28. 28.Half of 182 =
  29. 29.Half of 146 =
  30. 30.Double 28 =
  31. 31.Double 12 =
  32. 32.Double 51 =
  33. 33.Half of 138 =
  34. 34.Half of 32 =
  35. 35.Double 99 =
  36. 36.Double 78 =
  37. 37.Half of 22 =
  38. 38.Double 22 =
  39. 39.Double 53 =
  40. 40.Double 77 =

Answer key

  1. 43
  2. 92
  3. 190
  4. 34
  5. 87
  6. 51
  7. 76
  8. 18
  9. 86
  10. 31
  11. 56
  12. 104
  13. 66
  14. 142
  15. 162
  16. 24
  17. 39
  18. 32
  19. 42
  20. 108
  21. 26
  22. 168
  23. 98
  24. 94
  25. 50
  26. 17
  27. 58
  28. 91
  29. 73
  30. 56
  31. 24
  32. 102
  33. 69
  34. 16
  35. 198
  36. 156
  37. 11
  38. 44
  39. 106
  40. 154

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