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NWEA Math RIT 221-230
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NWEA Math Vocabulary for RIT scores 221-230
Terms in this set (56)
absolute value
The distance a number is from zero on a number line. ALWAYS POSITIVE
algebra
A mathematical sentence that includes at least one operation and a variable
algebraic equation
a number sentence that contains an equal sign and algebraic expressions - ex. y + 2 = 5
annual
Happening once a year
associative property
Changing the grouping of numbers will NOT change the value. For example: (7 + 4) + 8 = 7 + (4 + 8) also works with multiplication
box and whisker plot
visual display of data that organizes the data values into four groups using the upper and lower bounds
common denominator
a common multiple of the denominators of two or more fractions
common factor
A number that is a factor of two or more numbers
compute
to solve
constant
A term that has no variable. In x+2, 2 is the constant
coordinate
A number used to locate a point on a number line.
cubic centimeter
a metric unit of volume equal to one thousandth of a liter
cubic feet
the volume of a cube that is one foot on each side; ft³
cubic millimeter
the volume of a cube that is one millimeter on each side; mm³
cubic yard
the volume equal to a cube that is one yard on each side; yd³
dimension
A measurable extent, such as the three dimensions of an object is width, height, and depth.
distributive property
Explains how "to distribute" a common factor among the terms of an equation. Ex. 3 (A + B) = 3A + 3B
edge
a sharp side formed by the intersection of two surfaces of an object
enlargement
An increase with a scale factor greater than 1.
equilateral Triangle
A triangle with 3 congruent sides.
experimental probability
the ratio of the number of times in an event actually occurs to the total number of trials during a experiment
expression
A mathematical phrase that contains operations, numbers, and/or variables. no equal sign
frequency table
A table for organizing a set of data that shows the number of times each item or number appears.
inequality
A statement that compares two quantities using <, >, ≤,≥, or ≠
interest
A sum paid or charged for the use of money or for borrowing money
isosceles triangle
A triangle that has 2 equal sides.
mathematical sentence
a math equation or expression with numbers, operations, symbols, or variables
median
The middle number in a set of numbers that are listed in order
midpoint
A point that divides a segment into two congruent segments
mode
The number that occurs most often in a set of data
net
to gain or produce as clear profit.
ninth
ordinal number for nine. 1/9
obtuse angle
An angle between 90 and 180 degrees
outcome
A possible result of a probability experiment
partial product
method of multiplying, where one, tens, hundreds, etc. are multiplied separately and then the products are added together
Pi
3.14
positive linear relationship
increases in the values of one variable are accompanied by increases in the values of the second variable
predict
Give an expected result of an upcoming action or event.
prime factorization
A number written as the product of its prime factors; examples: 10 = 2 • 5, 24 = 2^3 • 3 (^3 means the 3 is written smaller and to the upper right of 2).
quadrant
any of the four areas into which a coordinate plane is divided by two the x and y axis
real number
Any number that is positive, negative, or zero, and is used to measure continuous quantities.
rectangular
A solid (3-dimensional) object which has six faces that are rectangles.
reflexive Property
A number is always equal to itself
scalene triangle
A triangle with no equal sides
scatter plot
A graph that displays two sets of data as ordered pairs (points)
square meter
a unit of area equal to 1 meter by 1 meter square
standard form
A common way of writing a number with commas separating groups of three digits starting from the right: 34,592
stem and leaf plot
A display of data in which digits with larger place values are "stems" and digits with smaller place values are "leaves."
substitution
Any expression can be substituted for an expression of equal value
survey
A study, generally in the form of an interview or questionnaire, that provides researchers with information about how people think and act.
ten million
10,000,000
ten thousandths
four decimal places to the right or 1/10,000
theoretical probability
Probability based on comparing the number of possible favorable outcomes to the number of total possible outcomes
thousandths
The third place value after a decimal point. Is the third largest decimal value. It takes 1,000 thousandths to make a whole. 0.001
transitive property
States that if A=B:B=C which means A is=to C
twice
multiply by two
THIS SET IS OFTEN IN FOLDERS WITH...
NWEA Math RIT Scores 231-240
59 terms
NWEA Math RIT Scores 211-220
64 terms
NWEA Math RIT Score 191-200
60 terms
NWEA Math RIT Scores 201-210
84 terms
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