Unit 5 Expressions Part 1 Flashcard

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What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (such as +, -, *, /) that represents a value.

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What does it mean to evaluate an expression?

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To evaluate an expression means to calculate its value by substituting the variables with given numbers.

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How do you write an expression for 'a number increased by 16'?

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What is the expression for 'three times a number'?

Back

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How do you represent 'fifteen less than a number' using a variable x?

Back

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Front

What is the difference between an expression and an equation?

Back

An expression does not have an equality sign, while an equation does.