Alg 1 EOC Review #2

Algebra 1 EOC Review #2: Electric Boogaloo

By Kelley Johnson

Read the slides FOR REAL.

I mean it!

READ the slides, don't just click-click-click
😑

Let's review

PEMDAS

A.k.a. "Order of Operations"

Let's Review
Solving one-step equations

You solve these equations by using PEMDAS backwards.
Watch!

You go through the order of operations, BACKWARDS to solve:

Here's another one-step equation:

Let's move on to TWO-step
equations

Let's Practice!
2 Step Equations

• Subtract 8 from both sides

• Multiply both sides by 3

• Simplify!

Multiple Choice

Use scratch paper or a whiteboard! DO the math for real.

• -9

• 6

• -6

• 9

Fill in the Blanks

Use scratch paper or a whiteboard! DO the math for real.

Multiple Choice

Use a ding-dang calculator!

• 9.5

• 15.4

• -2.3

• 7.4

Dropdown

​ w = ​

Select answer

DISTRIBUTION:
the term outside of the parentheses is multiplied by each of the individual terms INSIDE.

Solving multi-step equations

Now, with numbers!

WATCH as we solve for X:

Again!

Multiple Choice

Use scratch paper or a whiteboard!

• 19

• 20

• 4

• 3

Fill in the Blanks

Use scratch paper or a whiteboard!

Multiple Choice

Use scratch paper or a whiteboard!

• -22d

• 21/22

• 1

• -1

Identity vs. equation

An identity is an equation with the same value
on both sides of the equation once simplified.
Example: x = x

Example: 15 = 15

​4.68

​-5

Multiple Choice

Is this equation an identity?

x + 5 - 2 = x + 3

• yes

• no

• I have no clue

Multiple Choice

Is EVERY equation an identity?

• No - only if the two sides simplify to the same amount is an equation considered an identity.

• No, only division problems can be identities

• Yes - every single equation ever is always an identity, every single time.

• Not unless it's a Tuesday afternoon

Fill in the Blanks

Type either a "yes" or a "no" as your response below. USE SCRATCH PAPER OR A WHITEBOARD - do the work for real!

Fill in the Blanks

Type either a "yes" or a "no" as your response below. USE SCRATCH PAPER OR A WHITEBOARD - do the work for real!

Drag and Drop

f =

Placeholder

(positive number) OR f =​

Placeholder

(negative number)

Drag these tiles and drop them in the correct blank above

9

-1

8

-8

4

-9

Multiple Choice

• 7

• 1/7

• √7

• 0

Dropdown

d = ​

Select answer

(positive number) OR​

Select answer

(negative number)