Identifying Parts of an Expression

Front

What is a coefficient in an expression?

Back

A coefficient is a numerical factor that multiplies a variable in an expression.

Front

Identify a constant in the expression: 5x + 10.

Back

10 is a constant.

Front

What is an expression?

Back

An expression is a mathematical phrase that can include numbers, variables, and operators, but does not have an equal sign.

Front

What is a variable in an expression?

Back

A variable is a symbol, often a letter, that represents a number that can change.

Front

Identify the constant in the expression: 4x + 3y + 5.

Back

5 is the constant.

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with specific numbers.

Front

Which of the following is true about an expression? It can be solved, It can be evaluated, It is a mathematical phrase, It does not have an equal sign.

Back

It can be evaluated.

Front

What is the total cost of 2 pens and 3 correction tapes if a pen costs $3 and a correction tape costs $2?

Back

The total cost is 2(3) + 3(2) = 6 + 6 = $12.

Front

What is a term in an expression?

Back

A term is a single mathematical expression that can be a number, a variable, or a combination of both multiplied together.

Front

Identify the variable in the expression: 7x + 4.

Back

x is the variable.