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Doubles and Halves Trick Worksheet

Maths tricks trick 5: Doubles and halves game · Set 759 · 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 152 =
  2. 2.Half of 192 =
  3. 3.Double 73 =
  4. 4.Double 34 =
  5. 5.Double 31 =
  6. 6.Half of 186 =
  7. 7.Half of 92 =
  8. 8.Half of 164 =
  9. 9.Half of 56 =
  10. 10.Half of 118 =
  11. 11.Double 69 =
  12. 12.Half of 104 =
  13. 13.Half of 136 =
  14. 14.Double 22 =
  15. 15.Double 78 =
  16. 16.Double 97 =
  17. 17.Half of 52 =
  18. 18.Double 42 =
  19. 19.Double 65 =
  20. 20.Double 92 =
  21. 21.Double 72 =
  22. 22.Half of 38 =
  23. 23.Half of 122 =
  24. 24.Double 68 =
  25. 25.Double 27 =
  26. 26.Double 83 =
  27. 27.Double 87 =
  28. 28.Double 54 =
  29. 29.Half of 14 =
  30. 30.Half of 16 =
  31. 31.Double 16 =
  32. 32.Double 57 =
  33. 33.Double 14 =
  34. 34.Half of 198 =
  35. 35.Double 94 =
  36. 36.Double 25 =
  37. 37.Half of 132 =
  38. 38.Half of 36 =
  39. 39.Double 79 =
  40. 40.Double 18 =

Answer key

  1. 76
  2. 96
  3. 146
  4. 68
  5. 62
  6. 93
  7. 46
  8. 82
  9. 28
  10. 59
  11. 138
  12. 52
  13. 68
  14. 44
  15. 156
  16. 194
  17. 26
  18. 84
  19. 130
  20. 184
  21. 144
  22. 19
  23. 61
  24. 136
  25. 54
  26. 166
  27. 174
  28. 108
  29. 7
  30. 8
  31. 32
  32. 114
  33. 28
  34. 99
  35. 188
  36. 50
  37. 66
  38. 18
  39. 158
  40. 36

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