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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 77 · 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 71 =
  2. 2.Double 96 =
  3. 3.Half of 152 =
  4. 4.Double 24 =
  5. 5.Double 21 =
  6. 6.Half of 166 =
  7. 7.Half of 54 =
  8. 8.Half of 132 =
  9. 9.Double 61 =
  10. 10.Double 93 =
  11. 11.Double 92 =
  12. 12.Double 36 =
  13. 13.Double 84 =
  14. 14.Double 41 =
  15. 15.Half of 24 =
  16. 16.Double 48 =
  17. 17.Double 53 =
  18. 18.Half of 26 =
  19. 19.Half of 34 =
  20. 20.Double 86 =
  21. 21.Half of 18 =
  22. 22.Half of 174 =
  23. 23.Double 47 =
  24. 24.Half of 68 =
  25. 25.Double 11 =
  26. 26.Half of 156 =
  27. 27.Half of 48 =
  28. 28.Half of 116 =
  29. 29.Double 42 =
  30. 30.Double 75 =
  31. 31.Half of 42 =
  32. 32.Double 66 =
  33. 33.Half of 12 =
  34. 34.Double 39 =
  35. 35.Half of 72 =
  36. 36.Double 83 =
  37. 37.Half of 188 =
  38. 38.Double 59 =
  39. 39.Half of 64 =
  40. 40.Half of 176 =

Answer key

  1. 142
  2. 192
  3. 76
  4. 48
  5. 42
  6. 83
  7. 27
  8. 66
  9. 122
  10. 186
  11. 184
  12. 72
  13. 168
  14. 82
  15. 12
  16. 96
  17. 106
  18. 13
  19. 17
  20. 172
  21. 9
  22. 87
  23. 94
  24. 34
  25. 22
  26. 78
  27. 24
  28. 58
  29. 84
  30. 150
  31. 21
  32. 132
  33. 6
  34. 78
  35. 36
  36. 166
  37. 94
  38. 118
  39. 32
  40. 88

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