Math (need to know) Flashcards
I
1
V
5
X
10
L
50
C
100
D
500
M
1,000
Addition
Adding numbers
Average
The number you get when you add a set of things and divide by the number of things
Decimal point
A period that marks the place value for numbers with values less than 1
Denominator
the bottom number of a fraction
Difference
Answer to a subtraction problem
Dividend
The number that is divided in a division problem
Division
Finding out how many times one number can be put into another
Divisor
The number that divides into the dividend
Exponent
A small number placed to the upper right of a number that indicates how many times to multiply that number by itself
Factor
A number being multiplied in a multiplication problem
Fraction
A number that expresses part of a whole number
Multiplication
Adding the same number to itself a certain amount of times
Numerator
The top number of a fraction
Prime number
A number that can be divided only by itself and 1
Product
Answer to a multiplication problem
Quotient
Answer to a division problem
Square root
The original number’s square root is a number that, when multiplied by itself, gives you the original number
Subtraction
Taking one number away from another to get a smaller number
Sum
Answer to an addition problem
Coordinates
Two points that define a position on a line graph
Equation
Statement that two expressions are equal
Parabola
Shape with one curve and two lines going away from it
Acute angle
An angle that measures less than 90 degrees
Angle
Space between two lines meeting at the same point, measured in degrees
Arc
Part of the circumference of a cirlce, measured in degrees
Area
Amount of surface a shape has
Circle
Round shape in which all points on the circumference are the same distance from the senter
Circumference
Edge of a circle
Congruent
Identical
Degree
Unit of measurement for angles and arcs
Diameter
Line from one point to another on a circle’s circumference that passes through its center
Ellipse
Round shape like an oval
Equilateral triangle
Triangle with all sides and angles being equal
Geometry
Study of shapes
Hexagon
Shape with six sides
Hypotenuse
Longest side of a triangle
Isosceles triangle
Triangle in which two sides and angles are equal
Obtuse angle
Angle that measure more than 90 degrees
Octagon
Shape with eight sides
Parallel
Two lines on the same plane that never cross
Parallelogram
Shape with four sides in which opposite sides are parallel to each other
Pentagon
Shape with five sides
Perimeter
Distance are the edge of a shape
Perpendicular
Two lines that form a 90 degree angle
Pi
Ratio of a circumference to its diameter, 3.14
Polygon
Shape with all straight lines
Radius
Length of a line drawn from the center of a circle to a point on its circumference
Rectangle
Shape with four sides and four right angles
Rhombus
shape with four sides but no right angles
Right angle
Angle that is exactly 90 degrees
Right triangle
Triangle that contains a right angle
scalene triangle
Triangle in which no sides are the same length
Square
Shape with four sides of equal length
Trapezoid
Shape with four sides and only two sides that are parallel to each other
Triangle
Shape with three sides