Parts of an Expression

Parts of an Expression

How can you describe the parts of an expression?

Fill in the Blank

The activity club is holding a car wash. They charge $3 per car and $5 per van. Suppose they wash C cars and V vans. Write an expression for the total amount of money the club collects.

We can use the expression 3c + 5v

• 3c = each car is $3, so 3c means 3 x c

• 5v = each van is $5, so 5v means 5 x v

Identifying Terms

3c + 5v

• Term: Each part of the expression separated by a + or -

• This expression has 2 terms: 3c and 5v

Coefficients

• Only in terms with variables.

• The number that is multiplied by the variable.

• In 3c, the coefficient is 3.

• In 5v, the coefficient is 5.

Use words to describe the expression:

3c + 5v

• 3c is a product and the factors are 3 and c.

• The expression is the sum of 3c and 5v.

• This expression is the sum of two products.

Multiple Choice

How many terms are in this expression?

 $14+7x-4z$  

• 1

• 2

• 3

• 4

There are 3 terms.

 $14+7w-4z$  
14, 7w, 4z are terms because they are separated by + or -

Fill in the Blank

What is the coefficient of 7w?

The coefficient is 7 because 7 is the number the variable is being multiplied by.

Fill in the Blank

What are the factors of 7w?

The factors are 7 and w because those are the two numbers being multiplied.

Multiple Choice

How many factors are in the expression:

 $\frac{9}{5}c+32$  

• 1

• 2

• 3

• 4

Fill in the Blank

 $54u$  

Identify the coefficient of the variable.

Multiple Choice

 $7\left(10+4\right)\div2$  

What part of the expression represents a sum?

• 7

• 10 + 4

•  $\div2$  

•  $4\div2$  

Poll

How comfortable are you with identifying parts of an expression?

• Great!

• Okay

• Confused