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Mathematics · Grades 3–4

Variable

noun

A letter or symbol representing an unknown value in an equation.

Example Sentences

"In the equation 2x = 10, x is the variable."

"In algebra, variables allow us to write general rules about numbers."

Synonyms & Related Terms

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Quick Check

Which best describes the meaning of variable?

Study Tips

To remember variable, try writing it in a sentence of your own. Connect it to something you already know about mathematics.

Use it in conversation today — saying a word aloud three times helps lock it into long-term memory.