Rational Number Vocab Flashcards
Unit fraction
A fraction with a number 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 The fraction 1/9 is the multiplicative inverse of 9.
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 quotient
A strategy used to divide multi-digit numbers; the quotients you get in each step are called “partial quotients.”
Factor
A number you can multiply.
2 x 4 = 8
2 is a factor of 8.
4 is a factor of 8.
Factor pair
Two numbers that are multiplied together to give a product.
2 x 4 =8
2 and 4 are a factor pair.
Prime factorization
A way to write a composite number as a product of prime numbers. The prime factorization of 12 is 2 x 2 x 3.
Greatest common factor
The greatest factor two numbers have in common.
Multiple
The product of a number and any whole number.
Least common multiple
The lowest multiple shared by two or more numbers.
Coordinate plane
A two-dimensional space formed by two perpendicular number lines called axes.
Quadrants
The four 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 the y-axis intersect.
Ordered pair
A pair of numbers (x,y) that describe the location of a point on the coordinate plane.
Opposites
Two numbers are opposites if they are the same distance from 0 on the number line but opposite sides of 0.
