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.

Front

What does it mean to 'subtract' in algebra?

Back

To subtract means to take one quantity away from another. In algebra, this is often represented by the minus sign (-). For example, '5 subtracted from x' is written as x - 5.

Front

How do you represent 'a number increased by 7' in algebraic form?

Back

You represent it as n + 7, where n is the variable representing the unknown number.

Front

What is the difference between 'the sum of x and 4' and '4 plus x'?

Back

There is no difference; both expressions are written as x + 4.

Front

How do you express 'the product of 3 and a number' in algebra?

Back

You express it as 3n, where n is the variable representing the unknown number.

Front

What does 'the difference of a number and 10' mean in algebra?

Back

It means to subtract 10 from the number, represented as n - 10.

Front

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

Back

You write it as 2n, where n is the variable representing the unknown number.

Front

What is the algebraic expression for '5 more than a number'?

Back

It is written as n + 5.

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How do you express 'the quotient of a number and 4'?

Back

You express it as n/4.

Front

What does 'decrease by' mean in algebra?

Back

'Decrease by' means to subtract a certain amount from a number. For example, 'decrease x by 3' is written as x - 3.