Column addition is a way of adding numbers together. It's helpful when you're adding two-digit or three ... 3 tens + 2 tens + 1 ten (from the regrouping) = 6 tens Image caption, That is 60.

Now, he solves for an unknown in any position. This video addresses Common Core Grade 2 Standard Operations & Algebraic Thinking: Represent and solve problems involving addition and subtraction.

Julia begins with a Number of the Day warm up activity, followed by practicing 2 and 3 addition and subtraction equations, with and without regrouping, using base 10 drawings, expanded from ...

Column addition is a way of adding numbers together. It's helpful when you're adding two-digit or three ... 3 tens + 2 tens + 1 ten (from the regrouping) = 6 tens Image caption, That is 60.