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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 317 · 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 132 =
  2. 2.Double 99 =
  3. 3.Half of 32 =
  4. 4.Half of 128 =
  5. 5.Double 67 =
  6. 6.Double 94 =
  7. 7.Double 45 =
  8. 8.Half of 174 =
  9. 9.Half of 192 =
  10. 10.Double 82 =
  11. 11.Double 27 =
  12. 12.Double 39 =
  13. 13.Half of 66 =
  14. 14.Half of 34 =
  15. 15.Double 28 =
  16. 16.Half of 92 =
  17. 17.Double 77 =
  18. 18.Half of 104 =
  19. 19.Half of 114 =
  20. 20.Double 41 =
  21. 21.Double 56 =
  22. 22.Double 76 =
  23. 23.Double 57 =
  24. 24.Double 15 =
  25. 25.Double 16 =
  26. 26.Half of 124 =
  27. 27.Half of 16 =
  28. 28.Half of 52 =
  29. 29.Half of 182 =
  30. 30.Half of 86 =
  31. 31.Double 34 =
  32. 32.Double 93 =
  33. 33.Half of 58 =
  34. 34.Half of 156 =
  35. 35.Half of 134 =
  36. 36.Half of 116 =
  37. 37.Half of 88 =
  38. 38.Double 33 =
  39. 39.Half of 176 =
  40. 40.Half of 56 =

Answer key

  1. 66
  2. 198
  3. 16
  4. 64
  5. 134
  6. 188
  7. 90
  8. 87
  9. 96
  10. 164
  11. 54
  12. 78
  13. 33
  14. 17
  15. 56
  16. 46
  17. 154
  18. 52
  19. 57
  20. 82
  21. 112
  22. 152
  23. 114
  24. 30
  25. 32
  26. 62
  27. 8
  28. 26
  29. 91
  30. 43
  31. 68
  32. 186
  33. 29
  34. 78
  35. 67
  36. 58
  37. 44
  38. 66
  39. 88
  40. 28

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