While using our Explaining Why Addition and Subtraction Works Worksheet, students write, draw, or use equations and diagrams to explain what strategies you used to solve the problems.

While using our Decomposing the Numbers Worksheet, students break apart the numbers into pairs by showing 2 ways to decompose each number.

Using Find the Number that Makes 10 Worksheet, students determine the unknown number in each addition equation to make the sum of 10.

While using our Breaking Apart Numbers Worksheet, students break apart the numbers into pairs to show 2 ways to decompose each number.

While using our Addition Word Problems Worksheet, students solve addition word problems by drawing pictures and writing equations.

Using Adding Four Equations Worksheet, students solve twenty equations where they are adding four to the first addend.

Using Adding Three Counting On Worksheet, students solve equations where they are adding three to the first addend.