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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 702 · 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 48 =
  2. 2.Double 92 =
  3. 3.Half of 112 =
  4. 4.Double 45 =
  5. 5.Half of 74 =
  6. 6.Double 31 =
  7. 7.Half of 138 =
  8. 8.Double 59 =
  9. 9.Half of 94 =
  10. 10.Half of 144 =
  11. 11.Double 56 =
  12. 12.Double 36 =
  13. 13.Double 18 =
  14. 14.Double 32 =
  15. 15.Half of 188 =
  16. 16.Half of 152 =
  17. 17.Half of 186 =
  18. 18.Double 72 =
  19. 19.Half of 66 =
  20. 20.Half of 196 =
  21. 21.Double 14 =
  22. 22.Half of 126 =
  23. 23.Double 41 =
  24. 24.Double 96 =
  25. 25.Double 52 =
  26. 26.Half of 38 =
  27. 27.Half of 62 =
  28. 28.Double 11 =
  29. 29.Half of 42 =
  30. 30.Double 42 =
  31. 31.Half of 182 =
  32. 32.Double 77 =
  33. 33.Double 86 =
  34. 34.Double 81 =
  35. 35.Half of 72 =
  36. 36.Double 84 =
  37. 37.Half of 194 =
  38. 38.Half of 82 =
  39. 39.Half of 78 =
  40. 40.Half of 64 =

Answer key

  1. 24
  2. 184
  3. 56
  4. 90
  5. 37
  6. 62
  7. 69
  8. 118
  9. 47
  10. 72
  11. 112
  12. 72
  13. 36
  14. 64
  15. 94
  16. 76
  17. 93
  18. 144
  19. 33
  20. 98
  21. 28
  22. 63
  23. 82
  24. 192
  25. 104
  26. 19
  27. 31
  28. 22
  29. 21
  30. 84
  31. 91
  32. 154
  33. 172
  34. 162
  35. 36
  36. 168
  37. 97
  38. 41
  39. 39
  40. 32

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