Students put all their addition and subtraction skills together to solve equations.

In this lesson, students practice addition and subtraction problems without regrouping using the number line strategy and visual models. Julia uses number lines to model examples of this strategy ...

Cement addition and subtraction relationships To help your child build number sense, have him take several small objects (beans, pennies, etc.) and count out a specific number, starting with a ...

12 - 5 = 7 Just like with addition, we can use a part-whole model to help partition larger numbers to make them easier to deal with in subtraction problems.

Louis E. Raths, The Grade-Placement of Addition and Subtraction of Fractions, Educational Research Bulletin, Vol. 11, No. 2 (Jan. 20, 1932), pp. 29-38 ...

Twenty-four first-grade children were asked to write number sentences and select appropriate alternative number sentences for addition and subtraction word problems. Responses were qualitatively ...