In this lesson, students go over addition and subtraction with regrouping using different strategies to solve. Today we focus on using numbers lines to solve. Julia uses her chart and white board ...

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

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-digit ... 3 tens + 2 tens + 1 ten (from the regrouping) = 6 tens Image caption, That is ...