Mathematical Expressions and Equations Quiz

Name the variables (or unknown amount) in each expression below.

6 + x

y - 9

8z

• 6,y,x

• 9.x,z

• x,y,z

• 16

Name the constants (or numerical amounts) in each of the expressions below.

4 + n,

d - 9,

• d,m, a

• 4, d, n

• 4, 9

• +, -

Below each expression, tell what operation is used. Write addition, subtraction, division, or multiplication.

y - 3

6m

• addition, subtraction

• division, subtraction

• subtraction, division

• subtraction, multiplication

Tell whether each item below is an equation or expression.

9-n=15

• equation

• expression

Is the mathematical statement shown above an equation or an expression? 2 + x = 12 + 7

• Equation

• Expression

How many variables are in this statement? How many constants? 2 + x = 12 + 7

• Variables: 1, Constants: 2

• Variables: 2, Constants: 1

• Variables: 1, Constants: 3

• Variables: 2, Constants: 2

In algebra, a variable is an unknown quantity. It is often represented by a letter. What are the variables (or unknown amount) in each expression below.

Expressions: 6 + x,

y - 9,

8z,

• y, x

• y, z

• x,y,z

• v

What operation is being used in each of the expressions below.

Expressions: 2m

5 + a

• division, addition

• subtraction

• multiplication, addition

• multiplication, division

Write addition, subtraction, division, or multiplication.

Expressions: 9/b

• subtraction

• multiplication

• addition

• division

Tell whether each item below is an equation or expression. :

9 - n = 15,

2c = 4

• equation

• expression