Identifying Parts of an Expression

Front

What is an expression in mathematics?

Back

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

Front

Which of the following is true about expressions?

Back

Expressions can be evaluated but cannot be solved.

Front

How many terms are in the expression 3a + 2b + c + 100?

Back

There are 4 terms in the expression.

Front

What is a constant in an expression?

Back

A constant is a fixed value that does not change, such as the number 2 in the expression 4y + 2 + x.

Front

Identify the constant in the expression 3x + 2y + 7.

Back

The constant in the expression is 7.

Front

What is a coefficient in an expression?

Back

A coefficient is a numerical factor that multiplies a variable, such as 4 in the expression 4m + n + 2.

Front

Identify the coefficient in the expression 4m + n + 2.

Back

The coefficient in the expression is 4.

Front

What does it mean to evaluate an expression?

Back

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

Front

Can an expression have an equal sign?

Back

No, an expression does not have an equal sign; that is a characteristic of an equation.

Front

What is the difference between a term and a constant?

Back

A term can be a number, variable, or a combination of both, while a constant is a specific number that does not change.