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Write, read, and evaluate algebraic expressions with variables.
Learn step-by-step with practice exercises built right in.
A variable is a letter that represents an unknown number: , , , etc.
An expression combines numbers, variables, and operations:
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Explore more Grade 6 Math topics
| Words | Expression |
|---|---|
| A number plus 7 | |
| 5 less than a number | |
| 3 times a number | |
| A number divided by 4 | |
| Twice a number increased by 1 |
Substitute the given value and compute:
Evaluate when :
Evaluate when :
In :
Remember: means . In algebra, we usually skip the multiplication sign.