Math Terms 1
The measure of the space on the inside of a shape.
Area
pi x r2
Area of a circle
Two expressions that are always equal to each other.
Equivalent Expressions
2 x pi x r
Circumference
A line segment that goes from one edge of a circle to the other and passes throuhg the center.
Diameter
In a proportional relationship, the number that is multiplied against all the values and stays constant.
Constant of proportionality
When using the distributive property to rewrite a product as a sum. Ex: 2(3x + 4) -> 6x + 8
Expand
Two ratios that are always equivalent to each other.
Equivalent Ratios
A whole number that divides evenly without a remainder.
Factor
Quartile 3 - Quartile 1
Interquartile Range (IQR)
The number that appears most often.
Mode
A number less than zero
Negative Number
The point (0,0)
Origin
Use the distributive property to rewrite a sum as a product. The new expression is equal to the original expression. Ex: 20x + 35 -> 5(4x + 7)
Factor
Usually represented as "out of 100"
Percentage
The average of the distance between each number from the mean.
Mean absolute deviation or MAD
When you put money into an account.
Deposit
3.14
pi
A number greater than zero.
Positive Number
A line segment that goes from the center of a circle to the edge.
Radius
A representation of an actual place or object. It is usually smaller or bigger than the object.
Scale Drawing
"To the second power"
Squared
Rate per 1
Unit Rate
Usually represented as 51 - 99%.
Likely
A set of people or things we want to study.
Population