Equation Vocabulary

Equation & Expression

Vocabulary

Expression

A math sentence with a number, variable or a combination of numbers and variables. There is NO equal sign.

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Examples: 

 3x

4p + 8

-2x -3 + 9h

Equation

A math sentence where 2 mathematical expressions are equal.

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Example:

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5x + 9 = 24

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-6y + 12 = y - 18

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Multiple Select

Check each equation - look for the = sign!

• 4x + 9 =2 - 3

• 3f + 7

• x - 3 = 12

• 12.4m

Fill in the Blank

An expression is a math sentence that does not have an _____ sign.

Variable  Coefficient  Constant

Variable-a letter that represents a 

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number example m, n, x…

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Coefficient - a number in front of a letter. ​

  Example: 3x

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Constant- a number by itself

For example 4d + 8  8 is a constant

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Multiple Choice

Identify the variable in the following equation:

3x + 8 = 4y - 2

Look for the letters!

• a and b

• x and y

• 3x and 4y

• -2 and 8

Multiple Select

Check all that apply. Identify the coefficients in the following equation:

7x + 8 - 2y = -5x +8

Look for the numbers in front of a letter (there are three)!

• 2

• -2

• 7

• -5

• 8

Multiple Select

Check the constants.

5x + 7 = 3y - 2

Look for the numbers that stand alone!

• 5

• 7

• 3

• 2

Inverse-

opposite.  As in solving equations do the inverse (opposite ) operation

Multiple Select

What numbers are inverse or opposite?

• 3 and -3

• 5 and 4

• 7 and 8

• -2 and 2