24 terms

Cfritz15TEACHER

terminating decimal

A decimal number that ends or terminates

repeating decimal

A decimal that repeats a digit or group of digits forever

inverse operations

Operations that are the opposite of each other and cancel each other out. Addition and subtractions are inverse operations, as are multiplication and division

simple interest

Interest earned only on the original principal amount invested

proportional relationship

two quantities increase at the same rate

rational number

a number that can be expressed as a ratio (fraction) of two integers - terminating and repeating decimals are considered rational

irrational number

a number that cannot be expressed as a ratio of two integers or as a repeating or terminating decimal

inequalities

Algebraic statements that have ≠, <, >, ≤, or ≥ as their symbols of comparison.

equivalent fractions

Fractions that have the same value

ratios

a comparison of two quantities using division

slope

The ratio of the rise and the run between any two points in a line

constant of proportionality

In a proportional relationship, equations are of the form y=kx, where k is the constant of proportionality

order of operations

A rule for evaluating expressions: first perform the operations in parentheses, then compute powers, then perform all multiplication and division from left to right, and then perform all addition and subtraction from left to right.

diameter

A chord that passes through the center of the circle

pi

The ratio of the circumference divided by the diameter

circumference

The distance around a circle

area of a circle

A=πr²

similar shapes

Figures with the same shape but not necessarily the same size are similar.

scale factors

Comparing the lengths of corresponding sides of similar figures

pie chart

Chart that shows the relationship of a part to a whole

sample space

The set of all possible outcomes

probability

A number from 0 to 1 that measures the likelihood that an event will occur

percent

A ratio that compares a number to 100

lateral surface area

Sum of the surface areas of all the faces of a space figure except the bases