# Let's Learn Number System & Ratios

### Created By ; Kayla Rincon & Lauren Carpenter

Colin Dodds - Number Types (Math Song)

## Expression

Expressions-a mathmatical phrase that contains operations,numbers,and variables.
Super Base (WSHS Math Rap Song)

## Constant

Constant-term that does not change and increases and decreases the value of an expression.

## Coefficient

Coefficient-a number or symbol multiplied with a variable or an unknown quantity in an algebraic term, as 4 in the term 4x, or x in the term x(a + b)

## Term

Part of an expression that is added or subtracted.

## Quotient

Answer when 2 numbers are divided.

## Variable

A letter or a symbol that represents an unknown number.

## Product

Answer when 2 numbers are multiplied.

## Difference

Answer when 2 numbers are subtracted.

## Exponent

Number of times a factor is multiplied by itself.

## Factor

Numbers multiplied together to find a product.

## Equation

A mathmatical sentence that shows 2 expersions are equivalent.

## Evaluate

To solve or find the value.

## PEMDAS

The order in which operations are to be solved in. Parentheses, Exponents,Multiplication,Divison,Addition,Subtraction.
Flocabulary - Order of Operations - PEMDAS

## Positive and Negitaves

Positive numbers go to the left and negative numbers go to the right of zero. Positive numbers are above zero. Negative numbers are below zero.
Adding and Subtracting Positives and Negatives Rap

## Long Division

The number being divided into is called the dividend. The number that is dividing the other number is called the divisor. To check long division you multiply the number you got by the one dividing into the other number.

## Division Operations

Long Division by Mr. Duey

## Ratios

The quantitative relation between two amounts showing the number of times one value contains or is contained within the other.

## Percent Ratios

96/100=96% that is how you would write a percent ratio.

## Rates

A rate is a special ratio in which the two terms arein different units. For example, if a 12-ounce can of corn costs 69¢, the rate is 69¢ for 12 ounces.

## How to work out a Ratio

This picture will show you how to work a simple ratio out.
Ratio Rap