# variable ```1 variable
a letter used to represent an unknown
2 variable expression
a number sentence with variables and operation signs with
no equal sign
3 evaluate
solve
4 power
base and exponent (shortened repeated multiplication)
5 base
the number in a power being multiplied
6 exponent
the number of times the base is being multiplied in a power
7 order of operations
the rules used to solve all mathematical problems
8 equation
a number sentence with an equal sign
9 solution
10 perimeter
the distance around a closed figure
11 area
the space inside a closed figure
12 sum
13 difference
14 product
15 quotient
---------------------------------------------------------------------------------------------------------------------------16 decimal
a way to represent part of a whole number
17 scientific notation
a way to write very large or very small numbers, has a
decimal part between 1 and 10 and is multiplied by a
power of 10
18 metric system
a decimal system of weights and measures (uses meter,
liters, and grams)
19 meter
metric unit of length, height of a doorknob
20 millimeter
1/1000 of a meter, thickness of a dime
21 centimeter
1/100 of a meter, width of a paperclip
22 kilometer
1000 meters, length of 9 football fields
23 gram
metric unit of weight or mass, weight of a small paperclip
24 milligram
1/1000 of a gram, weight of a grain of sugar
25 kilogram
1000 grams, weight of a textbook
26 liter
metric unit of capacity, large water bottle
27 milliliter
1/1000 of a liter, eyedropper
28 kiloliter
1000 liters, 8 trash cans of water
29 mean
the sum of the values divided by the number of values
30 mode
the value that occurs most often
31 range
the difference between the greatest value and the least
value
32 median
the middle value when the values are written in numerical
order
33 sample
part of a group, used for a survey
34 population
the entire group of people or objects that you want
35 random sample
each person in the population has an equally likely chance
of being selected
36 biased sample
a non-random sample, not representative of the whole
population
37 line plot-
a number line with marks or dots that shows frequency
38 skew-
what outliers do to a data set, throws off averages by
adding a number much higher or much lower than the
other data
39 repeating decimal-
a decimal that has one or more numbers that repeats
40 terminating decimal-
a decimal number that ends
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41 cluster
data that is grouped together
42 gap
a large hole in the data
43 lower quartile
median of the lower half of a data set
44 lower extreme
least value in a data set
45 upper quartile
median of the upper half of a data set
46 upper extreme
largest number in a data set
47 interquartile range
the difference between the upper and the lower quartile in a
box-and-whisker plot
48 histogram
a graph to display intervals of one type of data
49 frequency table
used to group data into intervals
50 intervals
grouping of data broken into equal number span
51 frequency
the number of values that show up in an interval
52. Integer
positive and negative whole numbers and zero
53. Negative integer
a whole number that is less than zero
54. Positive integer
a whole number that is greater than zero
55. Absolute value
a number’s distance away from zero on a number line
56. Opposite
a number that is the same distance away from zero but on the
other side of the number line
57. terms
parts of an expression that are being combined for example in
3x+5 it would be the 3x and the 5
58. like terms
terms that have the same variable part, an therefore can be
combined
59. coefficient
the number part of a term that also has a variable; the 4 in 4x
60. constant
a term that has a number but no variable
61. inverse operation
operations that undo each other
62. inequality
a mathematical sentence formed by placing an inequality symbol
between two expressions
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63. function
a pairing of each number in a given set with exactly one number in
another set
64. input
number on which a function operates, (domain)
65. output
number produced by evaluating a function given an input (range)
66. Coordinate plane
a coordinate system used to graph numbers on, has an x and a y
axis
67. x-axis
horizontal line on a coordinate plane
68. y-axis
vertical line on a coordinate plane
69. origin
(0,0) on a coordinate plane, where the x and y axis meet
4 corners of a coordinate plane
71. ordered pair
pair of number used to identify a specific point on a coordinate
plane
72. x coordinate
first number in an ordered pair
73. y coordinate
second number in an ordered pair
74. ratio
comparison of two numbers using division: can be written
as a fraction, with a colon: or a to b
75. rate
a ratio of two quantities measured in different units
76. unit rate
a rate that has a denominator of one unit
77. proportion
an equation that states that two ratios are equal
78. scale
a relationship between a drawing’s dimensions and the
actual dimensions
79. outcomes
the possible results when an experiment is performed
80. event
a collection of outcomes of an experiment
81. favorable outcomes
outcomes corresponding to a specific event
82. probability
a number from zero to one that measures the likelihood
that an event will occur
83. theoretical probability
a probability based on all of the equally likely outcomes of
an experiment
84. experimental probability
a probability based on repeated trials of an experiment
85. set
a collection of distinct objects
86. element
an object in a set
87. empty set
the set with no elements
88. universal set
a set of all elements under consideration written as U
89. union
the set of all elements in either set A or set B written as
AU B
90. intersection (set)
the set of all elements in both set A and set B , written as
A∩ B
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