Learn how to use column addition to add 3-digit and 2-digit numbers with this Year ... the tens. 3 tens + 2 tens + 1 ten (from the regrouping) = 6 tens. ... Let's write it in a column addition grid.

Your child continues to use tape diagrams as a visual tool to solve word problems. Your child continues to use tape diagrams as a visual tool to solve word problems. Now, he solves for an unknown ...