9 birds are on a fence. Some more come.
Now there are 18 birds on the fence.
How many more birds came to the fence?
Help Max solve the problem.
Explain: Max says that he can use a doubles fact to solve the problem. Explain how he can do this.
Now there are 18 birds on the fence.
How many more birds came to the fence?
Help Max solve the problem.
Explain: Max says that he can use a doubles fact to solve the problem. Explain how he can do this.