CPMChapter 3 Vocabulary

absolute value

The distance of a number from zero on a number line.

coordinate graphA system of

graphing ordered pairs of numbers on a coordinate plane.

decimalThe point between the

whole number in the ONES PLACE and the number in

the TENTHS place in a decimal number.

equivalent fractions and ratios

Two fractions or ratios __:__ that have the same numerical

value.

fractionA number expressed in

the form where a and b are integers and b is not equal to

0.

integersWhole numbers (not fractions) that

can be positive, negative or zero.

least common multiple

The smallest common multiple of

a set of two or more integers.

lowest terms/ simplest form

A fraction for which the numerator and the

denominator have no common factor greater

than one.

multiplicative identityIf any number or

expression is multiplied by the number 1, the result is equal to the original number or

expression.

oppositeThe same number but with the opposite sign (+ or −). The additive

inverse.

ordered pairsTwo numbers written in order as

follows: (x, y). The first coordinate (x) represents the horizontal distance from the

origin. The second coordinate (y) represents the vertical distance

from the origin.

originThe point on a coordinate

plane where the x-axis and y-axis intersect. This point

has coordinates (0, 0). Also, the point assigned to

zero on a number line.

percentA ratio that compares a

number to 100.

pointAn exact location in

space. In a coordinate plane, an ordered pair

shows its location.

portionA part of something; a

part of a whole.

prime factorsA factor that is a prime number.

quadrantsThe coordinate plane is divided

into four of these.

ratioCompares two

quantities by division. Usually represented

as a fraction.

sampleA subset (group) of a given population with

the same characteristics as the whole population.

scale drawingA drawing that shows a real

object with accurate sizes except they have all been reduced or enlarged by a certain amount

(called the scale factor).

simplifyTo write a less complicated

expression with the same value.

x-axisThe horizontal

number line on a coordinate grid.

x-coordinateIn an ordered pair,

(x, y), it is the value of the x.

y-axisThe vertical number line on a coordinate

grid.

y-coordinateIn an ordered pair,

(x, y), it is the value of the y.