Rational Number Vocab Flashcards
unit fraction
a fraction with a numerator of 1. 1/3,1/8 and 1/12 are unit fractions
multiplicative inverse
Reciprocal; when you multiply a number by its multiplicative inverse the product is 1. 9 X 1/9=1
reciprocal
the multiplicative inverse of a number; with fractions, the numerator and denominator are switched. 5/8 X 8/5 = 1 8/5 is the reciprocal of 5/8
partial
A strategy used to divide multi-digit numbers; the quotients you get in each step are called “partial quotients”
Factor
A number you multiply. 2X4=8 2 is a factor of 8 4 is a factor of 8
Factor pair
2 numbers that are multiplied together to give a product
prime factorization
a way to write a composite number as a product of prime numbers.
greatest common factor (GCF)
The greatest factor 2 numbers have in common
multiple
the product of a number and any whole number
least common multiple (LCM)
the lowest multiple shared by 2 or more numbers
coordinate plane
a 2-dimensional space formed by 2 perpendicular number lines called axes
Quadrants
the 4 spaces of the coordinate plane that are created when the X-axis and Y-axis intersect at the origin
origin
the point (0,0) where the X-axis and Y-axis intersect.
ordered pair
a pair of numbers (x,y) that describe the location of a point on the coordinate plane.
opposites
2 numbers are opposites if they are the same distance from 0 on the number line but on opposite sides of 0.
