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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 788 · 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 24 =
  2. 2.Double 51 =
  3. 3.Double 89 =
  4. 4.Double 11 =
  5. 5.Double 84 =
  6. 6.Double 33 =
  7. 7.Half of 28 =
  8. 8.Double 76 =
  9. 9.Double 22 =
  10. 10.Double 24 =
  11. 11.Half of 26 =
  12. 12.Half of 148 =
  13. 13.Half of 166 =
  14. 14.Double 86 =
  15. 15.Half of 152 =
  16. 16.Double 17 =
  17. 17.Double 44 =
  18. 18.Half of 146 =
  19. 19.Half of 138 =
  20. 20.Half of 184 =
  21. 21.Double 28 =
  22. 22.Double 41 =
  23. 23.Half of 82 =
  24. 24.Half of 178 =
  25. 25.Double 98 =
  26. 26.Half of 36 =
  27. 27.Double 42 =
  28. 28.Double 31 =
  29. 29.Half of 58 =
  30. 30.Double 39 =
  31. 31.Double 27 =
  32. 32.Half of 182 =
  33. 33.Double 78 =
  34. 34.Double 99 =
  35. 35.Double 13 =
  36. 36.Half of 52 =
  37. 37.Double 81 =
  38. 38.Double 66 =
  39. 39.Double 16 =
  40. 40.Half of 112 =

Answer key

  1. 12
  2. 102
  3. 178
  4. 22
  5. 168
  6. 66
  7. 14
  8. 152
  9. 44
  10. 48
  11. 13
  12. 74
  13. 83
  14. 172
  15. 76
  16. 34
  17. 88
  18. 73
  19. 69
  20. 92
  21. 56
  22. 82
  23. 41
  24. 89
  25. 196
  26. 18
  27. 84
  28. 62
  29. 29
  30. 78
  31. 54
  32. 91
  33. 156
  34. 198
  35. 26
  36. 26
  37. 162
  38. 132
  39. 32
  40. 56

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