Writing algebraic expressions

Front

What is an algebraic expression?

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An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols. It does not have an equality sign.

Front

Define a variable in algebra.

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A variable is a symbol, often a letter, that represents an unknown value in an algebraic expression or equation.

Front

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 specific numbers.

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What is the difference between an expression and an equation?

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An expression is a combination of numbers, variables, and operations without an equality sign, while an equation states that two expressions are equal.

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How do you translate 'five more than a number h' into an algebraic expression?

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The expression is h + 5.

Front

Translate 'the difference of nineteen and a number b' into an algebraic expression.

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The expression is 19 - b.

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What is the algebraic expression for '4 less than a number n'?

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The expression is n - 4.

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If c represents the number of CDs Emily has, how would you express the number of CDs Nate has if he has 6 fewer than Emily?

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The expression is c - 6.

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How do you express 'a number added to 19'?

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The expression is 19 + n.

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What does 'the quotient of twenty and a number h' mean in algebraic terms?

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It means 20/h.