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Writing expressions

9 videos
6 skills
All the symbols you write in math are just a language or short-hand to represent real-world ideas. In this tutorial, we'll look at some of the short-hand including variables, expression terms, factors and coefficients. Mostly, however, we'll get experience writing algebraic expressions that elegantly represent real-life ideas. Common Core Standard: 6.EE.A.2, 6.EE.A.2b

What is a variable?

VIDEO 3:18 minutes
Our focus here is understanding that a variable is just a symbol that can represent different values in an expression. We got this. Just watch.

Why aren't we using the multiplication sign?

VIDEO 4:58 minutes
Great question. In algebra, we do indeed avoid using the multiplication sign. We'll explain it for you here.

Expression terms, factors and coefficients

VIDEO 7:21 minutes
Think of an expression as a sentence. A sentence has parts, and so does an expression. We think this is going to make sense, but take your time and pause if necessary!

Writing simple algebraic expressions

VIDEO 1:38 minutes
Can you write the algebraic expressions that represent what these statements are saying? Sure you can! We'll help you.

Writing expressions

PRACTICE PROBLEMS
Write a mathematical expression from a sentence.

Writing algebraic expressions

VIDEO 2:45 minutes
These sentences describe or represent algebraic expressions. See if you can translate them for solving. We'll do it together.

Writing algebraic expressions example 2

VIDEO 2:23 minutes
Like other exercises in this tutorial, we're rewriting statements into algebraic expression. This time we have to choose which is the correct one among those given.

Writing expressions 2

PRACTICE PROBLEMS
Write a mathematical expression from sentences. Requires distribution.

Writing algebraic expressions word problem

VIDEO 2:24 minutes
Here we interpret data in a table and solve a word problem by writing an algebraic expression.

Writing algebraic expressions word problem example 2

VIDEO 1:20 minutes
We're writing an expression to answer a word problem about butter. Could there be a better reason to do this?

Writing algebraic expressions example 3

VIDEO 0:44 minutes
The more you practice, the better you get at writing algebraic expressions. So don't hesitate. Let's go!