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Vocabulary
Expression or Equation?
Substitution
Solve for X
Mixed Review
100

Can contain variables, operations, and numbers but NO equal sign.

Expression

100

Determine if the following is an expression or an equation and then simplify or solve: x + 31 = 5

Equation; x = -26


100
Evaluate x - 15 for x = 45
30
100

3x = 12

x = 4

Right
100

Translate:

4 less than a number

x - 4

200

A mathematical statement that shows that two expressions are equivalent.

Equation

200

Determine if the following is an expression or an equation and then simplify or solve: 16 - x

Expression; cannot be simplified

200
Evaluate x + 16 for x = 48
64
200

-4y = -16

y = 4

Wrong; y = -4

200

72 - 4(3) + 2

39

300

Another word for the letters used in expressions and equations.

Variable

300

Determine if the following is an expression or an equation and then simplify or solve: -x/3 = 27

Equation; x = -81

300

Evaluate 3(10-x) for x = 17

-21

300

x - 7 = 49

x = 42

Wrong; x = 56

300

Translate: Twice the sum of a number and six

2(x + 6)

400

Numbers in expressions and equations not paired with the variable whose value cannot change.

Constant

400

Determine if the following is an expression or an equation and then simplify or solve: 268 = 4x

Equation; x = 67

400

Evaluate 48/x  for x = -12

-4

400

30 = 5x   

x = 150

Wrong; x = 6

400

True or False

152 = 252

False, 152= 225

500

The number paired with the variable in an equation or expression.

Coefficient

500

Determine if the following is an expression or an equation and then simplify or solve: 14x + 2(x-5) - 10

Expression; 16x - 20

500

Evaluate -4x - (-7) for x = 2

-1

500

y/10 = -50

y = -500

Right

500

Simplify 

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