Replacing Variables

Let's Review What

We Know

By Lisa Siewert

Multiple Choice

PEMDAS

In this math formula the P means

• Pi or $$\pi$$  

• Percent or %

• Parenthesis or ( )

Multiple Choice

PEMDAS

In this math formula the E means

• Equation

• Exponent

• Expression

Multiple Choice

PEMDAS

In this math formula the M means

• Multiplication

• Measure

• Mean

Multiple Choice

PEMDAS

In this math formula the D means

• Decimal

• Digit

• Divide

Multiple Choice

PEMDAS

In this math formula the A means

• Addition

• Angle

• Area

Multiple Choice

PEMDAS

In this math formula the S means

• Solve

• Subtraction

• Substitute

Multiple Choice

Let's review - PEMDAS

16 - 5 * 3

• 1

• 33

• 3

• 32

Multiple Choice

Let's review - PEMDAS

9 + 11 * 2

• 1

• 31

• 3

• 40

Multiple Choice

Let's review - PEMDAS

4(6 - 3)

• 13

• 36

• 12

• 40

Multiple Choice

   800

-  793

• 1593

• 17

• 7

Multiple Choice

   321

x   26

• 347

• 395

• 8346

Multiple Choice

There are 1,516 students enrolled at COVMS Middle School. Of these 842 are girls. What operation do I need to use to solve this problem?

• Addition

• Subtraction

• Multiplication

• Division

Multiple Choice

  In a contest, Mary earned 758 points. Helen earned 929 points. Bill earned 1,356 points. How many points did the two girls earn?

What operation do I need to use to solve this problem?

• Addition

• Subtraction

• Multiplication

• Division

Multiple Choice

 Mrs. Clark has 24 employees. Each employee makes 5 units each day. How many units do all employees complete in one day?

What operation do I need to use to solve this problem?

• Addition

• Subtraction

• Multiplication

• Division

Multiple Choice

Each bus can carry 77 passengers. How many passengers can be carried on 7 buses?

What operation do I need to use to solve this problem?

• Addition

• Subtraction

• Multiplication

• Division

Multiple Choice

To solve this problem I will need to

1/3 ÷  2/5 =

• Keep It

  Flip It

  Change It

• Add straight across

• Multiply it straight across

Multiple Choice

To solve this problem I will need to

$$3^3$$   

• 3 x 3

• 3 + 3

• 3 x 3 x 3

Multiple Choice

If y = 3  

Which statement is True?

• y + 3 = 5

• 6y + 1 = 19

• 4y - 16 = 20y

Multiple Choice

To isolate the variable, the first thing I need to do is

a + 11 = 17

• subtract 11 from both sides

• add 11 to both sides

Multiple Choice

To isolate the variable, the thing I need to do is

remove the constant (number) from both sides.

Solve this equation

x + 15 = 45

• subtract 15 from both sides

  x = 45 - 15

  x = 30

• add 15 to both sides

  x + 30 = 45 + 15

Multiple Choice

To isolate the variable, the thing I need to do is

remove the constant (number) from both sides.

Solve this equation

x - 5 = 25

• subtract 5 from both sides

  the answer will be

  x - 10 = 20

• add 5 to both sides

  the answer will be

  x = 30