Mental Math Day!

The fourth graders are busily creating Show me videos on how to solve mental math problems.  Check out our example by Valentina!

Think:  How can breaking apart numbers help you solve addition and subtraction problems mentally?

Here are some practice problems to tell a friend:

1:  121 + 347

2:  53 + 48

3:  26 + 64

4:  1,090 + 3,010

5:  5,790 + 4,200

Can you think of others to solve?

Happy Wednesday!