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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 310 · 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 12 =
  2. 2.Double 16 =
  3. 3.Half of 36 =
  4. 4.Half of 122 =
  5. 5.Half of 178 =
  6. 6.Double 41 =
  7. 7.Double 25 =
  8. 8.Half of 84 =
  9. 9.Double 71 =
  10. 10.Half of 62 =
  11. 11.Double 51 =
  12. 12.Half of 52 =
  13. 13.Half of 124 =
  14. 14.Double 81 =
  15. 15.Half of 188 =
  16. 16.Double 19 =
  17. 17.Double 44 =
  18. 18.Double 33 =
  19. 19.Half of 182 =
  20. 20.Half of 38 =
  21. 21.Half of 102 =
  22. 22.Half of 96 =
  23. 23.Double 98 =
  24. 24.Double 53 =
  25. 25.Double 66 =
  26. 26.Half of 92 =
  27. 27.Half of 168 =
  28. 28.Double 49 =
  29. 29.Half of 64 =
  30. 30.Half of 148 =
  31. 31.Half of 44 =
  32. 32.Half of 176 =
  33. 33.Double 75 =
  34. 34.Double 67 =
  35. 35.Double 65 =
  36. 36.Double 32 =
  37. 37.Half of 132 =
  38. 38.Half of 134 =
  39. 39.Half of 26 =
  40. 40.Half of 114 =

Answer key

  1. 6
  2. 32
  3. 18
  4. 61
  5. 89
  6. 82
  7. 50
  8. 42
  9. 142
  10. 31
  11. 102
  12. 26
  13. 62
  14. 162
  15. 94
  16. 38
  17. 88
  18. 66
  19. 91
  20. 19
  21. 51
  22. 48
  23. 196
  24. 106
  25. 132
  26. 46
  27. 84
  28. 98
  29. 32
  30. 74
  31. 22
  32. 88
  33. 150
  34. 134
  35. 130
  36. 64
  37. 66
  38. 67
  39. 13
  40. 57

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