7th Grade Expressions and Equations

Vocabulary

100

The "3" in the expression:

3x + 2

coefficient 

200

The opposite of something is it's 

Inverse 

300

The letter in an equation is the 

Variable

400

Terms that share the exact same variable

Like Terms

500

Multiplying a single term by each term inside a set of parentheses 

Distributive Property

Distributive Property

100

Simplify. 

2(x-7)

2x-14

200

Simplify. 

-3(x-9)

-3x+27

300

8(x-3)

8x-24

400

-10(x-3)

-10x+30

500

9(x-15)

9x-45

Simplifying Expressions

100

7x+8-3x+5

4x+13

200

2x-7(3x+5)

-19x-35

300

5(x-3)-2(x-9)

 

3x+3

400

(4x-8) + (9x+2)

13x-6

500

(10x-3)-(4x+6)

6x-9

Equations

100

Which operation should be used to solve this equation?

6-x=-8

subtraction

200

Which operation should be used to solve this equation?

-2x=24

division

300

True or False?  When solving an equation, you always perform the inverse operation?

True

400

Solve.  

x+13=43

x=30

500

x+5=-40

x=-45

Integer Review

100

-24 + 48

24

200

-5  x -10

50

300

3.2 + (-2.2)

1.0

400

Three times negative five minus four

-19

500

-55.26 - 37.74

93