Martin used three wooden craft sticks for a sculpture design. the first stick was 9.545 mm wide. the second stick was 8.23 mm wide. what was the total width of the two sticks? .
can you explain how you got the answer. : )

I believe you just add the two lengths, so I'm going to do my best to show you column addition:
9 . 5 4 5
8 . 2 3 +
1 7 . 7 7 5
So your answer would be 17.775mm, I hope this helps! Let me know if you need me to explain the column addition :)