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. It does not have an equality sign.

Front

How do you represent the number of items left after some are taken away?

Back

If you start with x items and y are taken away, the expression is x - y.

Front

What does 'twice a number' mean in algebraic terms?

Back

'Twice a number' means 2 times that number, represented as 2n where n is the number.

Front

How do you express the sum of a constant and a variable?

Back

The sum of a constant a and a variable x is expressed as a + x.

Front

What is the product of a number and a constant?

Back

The product of a number n and a constant k is expressed as kn.

Front

How do you write an expression for the quotient of a constant and a variable?

Back

The quotient of a constant a and a variable n is expressed as a/n.

Front

What does 'increased by' indicate in an expression?

Back

'Increased by' indicates addition. For example, 'k increased by 5' is expressed as k + 5.

Front

How do you express 'the difference between two numbers'?

Back

The difference between two numbers a and b is expressed as a - b.

Front

What is the expression for '4 divided by the sum of a number and 12'?

Back

The expression is 4 / (n + 12).

Front

How do you express 'the sum of 13 and twice a number h'?

Back

The expression is 13 + 2h.