👉Learn how to solve a system (of equations) by elimination. A system of equations is a set of equations which are collectively satisfied by one solution of the variables. The elimination method of ...

Solve real world problems with addition and subtraction within 1,000. Warm up with a Mystery Math Mistake as you add two 2-digit numbers using a decomposition strategy. Use visual models and place ...

Ways to break apart numbers to solve addition & subtraction equations in a fact family. In this lesson, Julia reviews the ways to make 10 and how we can use these ways to break apart numbers to solve ...

👉 Learn how to solve two-step linear equations. A linear equation is an equation whose highest exponent on its variable(s) is 1. To solve for a variable in a two-step linear equation, we first ...