Math Vocabulary (Pre-Algebra)
As the school year goes on I will add new words to this list for you to study.
Terms in this set (49)
Order of Operations
The way in which an expression is to be evaluated--PEMDAS. 1. parentheses 2. exponets 3. multiplication and division from left to right 4. addition and subtraction from left to right
An equation that states that two ratios are equal
A comparison of two numbers by division
A quantity obtained by addition
A quantity obtained by multiplication
The number obtained by division
A closed plane figure bounded by straight sides
The number of square units needed to cover a flat surface
The amount of 3-dimensional space occupied by an object
Two angles that share a vertex and a side but have no interior points in common.
A number multiplied by a variable in an algebraic expression.
Distance = Rate * Time
In a right triangle, it is the longest side which is opposite the right angle
Any number written as a quotient of two integers where the denominator is not zero.
A solid with two parallel and congruent polygonal faces called bases. Named for the shape of its base.
The sum of the areas of all the faces of a solid figure
An angle less than 90 degrees but more than 0 degrees
Having the same size and shape
Describes the number of times a quantity (base) is multiplied by itself
The inverse of a fraction; when multiplied by the original fraction, it results in a product that equals one
an average of numbers computed by adding the numbers and dividing by the total number of numbers
ex. 1, 2, 3
3 + 2 + 1 = 6
6 / 3 = 2
The mean is 2.
The middle number in a set of numbers that are listed in order
The most frequent value of a numbers in a data set
The difference between the least and greatest values in a set of numbers
The total distance around a polygon.
The distance around a circle.
C = 2r(pi) or C = d(pi)
An angle the measures a 180 degrees
When the sum of the measures of a pair of angles add up to 180°
Two angles whose measures add to 90°
A mirror image of a figure shown over a line of reflection
A straight line connecting two points on a curve
A whole number greater than 1 that has more than two factors
Equal in amount or value
The probability of an event based on the repeated trials of that event
Probability based on comparing the number of possible favorable outcomes to the number of total possible outcomes
The flat surfaces of a 3-D figure
Lines going in the same direction and always the same distance apart. The lines never meet or cross each other.
Two lines that intersect at a 90 degree angle.
A quadrilateral (4-sided figure) that has both pairs of opposite sides are equal and parallel. Example: all rhombi, (plural for rhombus), squares and rectangles
A four-sided polygon
The distance from the center of a circle to any point on the circle.
The length of a straight line passing through the center of a circle and connecting two points on the circumference
A symbol used to represent an unknown number, usually a lower case letter; y, a, b, x.
The set of numbers that includes rational and irrational numbers.
Numbers that cannot be expressed as a ratio of two integers. Their decimal expansions are nonending and non-repeating. Pi is an example.
The distance a number is from zero on a number line (positive)
Changing the grouping of numbers will NOT change the value. For example: (7 + 4) + 8 = 7 + (4 + 8) also works with multiplication
In mult or add, the order of two numbers may be switched around and the answer is the same.
Ex: 1 + 2 = 2 + 1
4 = 4
The ratio of the circumference to the diameter of a circle