What is a variable in an algebraic expression?

A letter that represents a value we do not know yet.

Algebraic Expressions

Name: Algebraic Expressions
Author: Insta~Lesson

7th Grade · Math · 78 min· Common Core 7.ee.4

I can write and evaluate algebraic expressions

1
A variable is a letter that represents a value we do not yet know.
2
Product means the answer to a multiplication problem, while sum means the answer to an addition problem.
3
When an expression says 'less than,' we switch the order of the values.

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