Review Lessons 2.1 to 2.3

Vocabulary

100

A _____ represents an unknown amount/quantity or value.

A variable represents an unknown amount/quantity or value.

200

___ ___ have the same variable or exponent. We combine these together

like terms 

300

What property is being shown in this example?

2( x + 3 ) = 2x + 6

Distributive property

400

The three questions we ask ourselves when solving equations are 1. ___ 2. ___ 3.____

The three questions are: 1. What's the Variable?  2. What's being done to the Variable?  3.  What's the Opposite?

500

Once we answer question 3, what order to we solve in?

Backwards PEMDAS - Bottom up - SADMEP - Opposite Order

1-2 step equations

100

-7m = 63

m=-9

200

n/7 = -8

n= -56

300

-2k-4=8

k=-6

400

h/-3 + 6 = -4

h=30

500

2x + 6 = 6

x = 0

combining like terms and distributive property

100

6m – 5m + 1

m+1

200

-6(4x - 5)

-24x + 30

300

9 -3d(6 + 9)

9 - 45d   or    -45d + 9

400

4(5f + 3) + 11 

20f + 23

500

3(5x - 2) + 9x - 4

24x - 10 

3 to multi-step equations

100

3(2x - 9) = 3

x = 5

200

3x + 4 + x + 2 = -30

x = -9

300

2 +9(x-1) = 2

x = 1

400

2(x + 3) + 1 = 31

x = 12

500

2x - 1 +2(x - 1) = - 7

x = -1

Miscellaneous

100

What is the opposite of addition?

Subtraction

200

What are the four basic operations?

Add, Subtract, Multiply, Divide

300

When is your next Algebra 1 Quiz?

Tomorrow!

400

What is your teacher's name?

Mrs. Larsen

500

What does each letter in the acronym PEMDAS stand for?

Parentheses , Exponents , Multiply , Divide , Add , Subtract