Vocabulary Review

A letter that stands for a number in an expression or equation

• expression

• variable

• equation

• evaluate

To solve an expression

• expression

• variable

• equation

• evaluate

A number sentence that uses an equal sign to show that two expressions have the same value.

• expression

• variable

• equation

• evaluate

Numbers, variables, and operations (such as + and x) grouped together to show the value of something

• expression

• variable

• equation

• evaluate

Select all that are expressions

• 3 x 2 + 4 = 10

• 5 + 6 - 10

• 40 + (8x4)

• 40 + (8x4) = 72

Select all that are equations

• 3 x 2 + 4 = 10

• 5 + 6 - 10

• 40 + (8x4)

• 40 + (8x4) = 72

Select the equations that have a VARIABLE:

• 45 - 5 + 2 = 42

• 20 + c = 26

• (16 x 2) + 5 - 6

• 12 x 2 - 10 = k

Solve this expression:

25 - 5

Solve this equation:

4 x 8 = ?

Which expression equals 28?

• 7 + 4

• 7 x 4

• 20 + 7

• 30 - 28