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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 807 · 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 47 =
  2. 2.Double 64 =
  3. 3.Half of 108 =
  4. 4.Half of 142 =
  5. 5.Double 27 =
  6. 6.Half of 76 =
  7. 7.Half of 44 =
  8. 8.Half of 22 =
  9. 9.Half of 124 =
  10. 10.Double 33 =
  11. 11.Half of 196 =
  12. 12.Half of 18 =
  13. 13.Double 92 =
  14. 14.Double 88 =
  15. 15.Half of 182 =
  16. 16.Half of 154 =
  17. 17.Half of 102 =
  18. 18.Double 11 =
  19. 19.Half of 32 =
  20. 20.Double 75 =
  21. 21.Half of 126 =
  22. 22.Half of 34 =
  23. 23.Double 84 =
  24. 24.Double 36 =
  25. 25.Double 46 =
  26. 26.Double 49 =
  27. 27.Double 61 =
  28. 28.Double 34 =
  29. 29.Half of 52 =
  30. 30.Half of 62 =
  31. 31.Double 77 =
  32. 32.Half of 54 =
  33. 33.Half of 186 =
  34. 34.Half of 116 =
  35. 35.Double 52 =
  36. 36.Half of 14 =
  37. 37.Half of 152 =
  38. 38.Double 42 =
  39. 39.Double 21 =
  40. 40.Half of 192 =

Answer key

  1. 94
  2. 128
  3. 54
  4. 71
  5. 54
  6. 38
  7. 22
  8. 11
  9. 62
  10. 66
  11. 98
  12. 9
  13. 184
  14. 176
  15. 91
  16. 77
  17. 51
  18. 22
  19. 16
  20. 150
  21. 63
  22. 17
  23. 168
  24. 72
  25. 92
  26. 98
  27. 122
  28. 68
  29. 26
  30. 31
  31. 154
  32. 27
  33. 93
  34. 58
  35. 104
  36. 7
  37. 76
  38. 84
  39. 42
  40. 96

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