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7th Math Vocabulary List
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Gravity
Terms in this set (48)
Absolute value
the distance from zero on a number line; symbolically | x |
Integer
A whole number, its opposite, and zero
Multiplicative inverse/reciprocal
"flipping a fraction" 7/3 is the reciprocal of 3/7; when you multiply a fraction and its reciprocal you get 1
Natural/Counting Number
the numbers starting with 1 and counting up (1, 2, 3, 4, 5...)
Rational number
a number that can be written as a ratio of two integers
Whole Number
the numbers starting with 0 and counting up (0, 1, 2, 3, 4, 5...)
Coefficient
the number in front of the variable, indicating multiplication
Constant
a term that does not contain a variable.
Equation
a mathematical sentence using numbers and/or variable(s) where both sides are equal
Expression
a combination of numbers, operations and/or variables with no equal sign
Inequality
mathematical sentences having the symbols <, >, ≤, or ≥
Variable
a symbol, usually a letter, used to represent a number
area
the number of square units covering a surface of a figure
big B
area of the base, is used to find total surface area of prisms and volume of many 3D figures
circumference
the distance around a circle or its perimeter
diameter
the distance across a circle through its center
lateral surface area
the area of the non-base face(s) of a solid; the sum of all the areas of its lateral faces
net
a two-dimensional representation of a three-dimensional figure
pi
the ratio of the circumference to the diameter of a circle; approximately 3.14 or 227
prism
a solid figure with two parallel congruent bases and all other faces are parallelograms
total surface area
the sum of the areas of the faces of a 3-D figure
volume
the amount of space a three-dimensional object contains; measured in cubic units
constant of proportionality
the constant ratio in a proportional linear relationship
proportion
an equation stating that two ratios or rates are equivalent
scale factor
a scale written as a ratio, without units, in simplest form
similar figures
figures that have congruent corresponding angles and proportional corresponding sides
unit rate
a rate with a denominator of 1
complement
events of one outcome happening and that outcome not happening, the sum of the probabilities of an event and its complement is 1 or 100%
dependent events
events in which the outcome of one event does affect the outcome of the other event or events
experimental probability
the ratio of the number of favorable results to the total number of trials in a probability experiment; is based on what DOES happen in an experiment
independent events
two or more events in which the outcome of one event does not affect the outcome of the other event
sample space
the set of all possible outcomes of a probability experiment
theoretical probability
the ratio of the number of favorable outcomes to the total number of possible outcomes; is based on what should happen under perfect circumstances
center
values that describe a typical or average data point; mean, median and mode are used to determine this
interquartile range
a measure of spread in a set of numerical data, the distance between the first and third quartiles of the data set
shape
describes the data distribution; symmetrical, skewed, gaps, clusters and outliers are often used
spread
describes the range of values in a data set; range and interquartile range are often used to determine this
sample
a subset of the population selected in order to make inferences about the entire population
assets
items that are owned by an individual
budget
a plan for spending
compound interest
interest paid on the initial principal and on interest earned in the past
fixed expenses
costs that do not change based on the amount that is used
interest
a charge for the use of credit or borrowed money if the balance is not paid off in a set amount of time
liability
debts that are owed by an individual
net worth
the value of one's assets minus one's liabilities
percent of change
compares the change in quantity to the original amount
simple interest
interest paid only on the initial principle of a savings account or loan
variable expenses
costs that change based on the amount that is used
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