Writing Algebraic Expressions

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols. For example, 2x + 3 is an algebraic expression.

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What does it mean to 'add a number' in algebra?

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To 'add a number' means to combine a variable with a constant using the addition operation. For example, if n is a number, then 'a number added to 19' can be expressed as 19 + n.

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How do you represent 'subtract a number from 10' in algebraic form?

Back

This can be represented as 10 - n, where n is the number being subtracted.

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What is the algebraic expression for 'the difference of three and a number'?

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The expression is 3 - n, where n represents the unknown number.

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How do you express 'the sum of 11 and a number' in algebra?

Back

This can be expressed as 11 + n, where n is the number being added.

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What is a variable in algebra?

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A variable is a symbol, often a letter, that represents an unknown value. For example, in the expression 2x + 3, x is the variable.

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What does 'the product of a number and 5' mean in algebra?

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It means to multiply the number by 5, which can be expressed as 5n, where n is the number.

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How do you write 'twice a number' in algebraic form?

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This can be written as 2n, where n is the number.

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What is the meaning of 'the quotient of a number and 4'?

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It refers to dividing the number by 4, expressed as n/4.

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What does 'the sum of a number and 7' look like in algebra?

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This is represented as n + 7, where n is the number.