REVIEW

Equations

100

What is an equation?

What is two expressions that are equal 

200

Solve 4x=16

x=4

300

Give an example of a tricky question from your worksheet

Tricky questions have an extra step, to isolate the variable we have to first move the variable to the other side of the equation and then isolate it.

400

What is the object I used to describe an equation? 

HINT: apples and oranges

A balance scale

500

Write your own equation

Miss. Hohn will check your equation

Expressions

100

What is an expression?

What is a group of numbers and/or variables that show the value of something without an equal sign

200

How would you write the description "4 divided by a number and take away 3" as an expression

4/n-3

300

What does 4x represent and why do we write it that way? 

It represents 4 multiplied by a number, we write it this way because writing x could be confused for the letter 'x' as another variable instead of the multiply symbol. 

400

Write an expression for the following description "4 multiplied by a number and increased by 7"

4n+7

500

Write an expression for the description "A number multiplied by 2 and increased by 3"

2n+3

Variables

100

What is a variable?

What is a placeholder that represents an unknown number

200

What do you do to the variable when solving an equation?

Isolate the variable

300

Solve the variable 'y'

8y=24

y=3

400

Solve the variable 

3y-2=13

y=5

500

Give a real life example when you could use a variable to figure something out? 

HINT! The server example

If a server makes a set hourly wage of $7 plus whatever tips he makes, you could use a variable to describe that he will make seven dollars an hour plus whatever he makes in tips. 7+n

Descriptions

100

How would you write the expression 5t+1?

Five multiplied by a number and increased by 1

200

What operation is "decreased" associated with?

Subtraction

300

The term 'product' is associated with which operation?

Multiplication

400

Write the expression for the following description "A number multiplied by 7 and decreased by 6"

7n-6

500

How would you describe the following expression? 

n/5-3

A number divided by five and decreased by three

Rules

100

When solving the equation 4x=8, I divide x from 4 and 8. Why do I do this?

What is what you do to one side you MUST do to the other

200

What are the steps in solving for a variable in equations?

1. isolate the variable

2. rearrange the equation

3. solve the variable

4. check your check/circle the answer

300

What is the difference between an equation and an expression?

Expressions do not have an equal sign, equations have an equal sign to show each side of the equation are equal.

400

In which operations does the order matter?

Subtraction and Division

500

What operations does the / represent?

Division