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

What does 'decreased by' mean in algebra?

Back

'Decreased by' indicates subtraction. For example, 'a number decreased by 12' translates to n - 12.

Front

How do you represent 'Nate has 6 fewer CDs than Emily' using variables?

Back

If c represents the number of CDs Emily has, then Nate has c - 6 CDs.

Front

What does 'more than' signify in an algebraic expression?

Back

'More than' indicates addition. For example, '80 more than B' translates to B + 80.

Front

How do you express '9 plus a number' in algebraic terms?

Back

'9 plus a number' can be expressed as 9 + n.

Front

What does 'twice' mean in algebra?

Back

'Twice' means to multiply by 2. For example, 'twice t' is represented as 2t.

Front

How do you express '6 fewer than twice t'?

Back

'6 fewer than twice t' is expressed as 2t - 6.

Front

What is the difference between a variable and a constant?

Back

A variable is a symbol (like n or c) that represents a number that can change, while a constant is a fixed value (like 12 or 80).

Front

What does 'less than' indicate in an algebraic expression?

Back

'Less than' indicates subtraction. For example, 'a number less than 5' translates to n - 5.

Front

How do you write 'the sum of a number and 12'?

Back

'The sum of a number and 12' is expressed as n + 12.