Combining like terms, operations with signs, variables with expressions

Combining Like terms

100

5x+2-2x+3

3x+5 

200

6x+12x-x

17x

300

2(3x+5)+2(x-2)

8x+6

400

6x+4-(2x-3)

4x+7

500

2/10y- 3/20y 

1/20 y

Operations with Signs

100

What is a negative times a negative?

Positive 

200

6-(-4)

10

300

(-2)(7)+(-9)(-7)

49

400

(-4)² +3(-3)-2

5

500

6-12+4+10-1+6-7 

6 

Variables &expressions

100

x+12    x=5 

17 

200

10 (2/5x)   

4x 

300

-3m+17      m=4

5

400

-4(5x+1)

-20x-4 

500

-12(6x-10)

-72x+120

Terminology

100

Expressions that have one term

monomial 

200

Expressions with 2 terms

binomials 

300

Expressions with three terms 

trinomial 

400

What is the associative property of addition?

Changing the grouping of numbers does not change the sum.

500

What does PEMDAS stand for? 

It stands for

 P- Parentheses, E- Exponents, M- Multiplication, D- Division, A- Addition, and S- Subtraction.