Question

There are 35 birds in a tree. Then 17 flew away. How many birds are tin the tree now. Regroup a ten.

Answer 1

18 birds are left then regroup a ten 28 I hope it’ helps

Answer 2

You do 35-17=18

This means 18 birds are left. I don’t know what you mean by “regroup a ten” though, did your question cut off?

hope that helps tho :)