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NWEA Math 7th
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Key Concepts:
Terms in this set (44)
Sum
the answer to an addition problem
Difference
a quantity by which amounts differ; the remainder left after subtraction of one value from another.
Decimal
A number with one or more digits to the right of the decimal point
place value
The value of a digit based on its position within a number
Product
the answer to a multiplication problem
Quotient
the answer to a division problem
Absolute Value
The distance a number is from zero on a number line
Acute Angle
less than 90 degrees
Algebra
A branch of mathematics that involves expressions with variables
Area of a Rectangle
A=lw
Area of a Triangle
A=1/2bh
Addition
four plus eleven
Box plot
A graph that displays the highest and lowest quarters of data as whiskers, the middle two quarters of the data as a box, and the median
Area of a circle
The area of a circle equals pi (3.14) times the radius squared.
Circumference
the outer boundary of a circle; the perimeter
Clockwise
in the same direction as the rotating hands of a clock
Denominator
The bottom number in a fraction
Diameter
A straight line passing from side to side through the center of a circle or sphere.
division
eighth-eighth divide by twenty-eighth
Dimensions
...
Equation
...
Equavalent
...
`Expresstion
...
Exponent
a quantity representing the power to which a given number or expression is to be raised, usually expressed as a raised symbol beside the number or expression (e.g., 3 in 23 = 2 × 2 × 2).
Formula
a mathematical relationship or rule expressed in symbols.
Fraction
a part of a whole; a broken piece of something that is no longer whole
Geometry
mathematics dealing with lines, angles, surfaces, and solids
greatest common factor (GCF)
The largest factor that two or more numbers have in common.
greates common multiple (GCM)
GCM. the largest common multiple of a set of two or more numbers.
least common multiple
LCM. The smallest common multiple of a set of two or more number
least common factor
(LCF) is the smallest common factor of two or more numbers. For example, the multiples of 3 include 3, 6, 9, 12, 15, etc.; the multiples of 5 include 5, 10, 15, 20, etc. Therefore, the least common multiple of 3 and 5 is 15.
identity equation
An equation that is true for all values of the variable.
Measurement
...
Mean
you add munbers later you divide by the numbers you use.
Median
the middle score in a distribution; half the scores are above it and half are below it
Minute
...
Mode
most frequently occurring score
negitive numbers
numbers less than zero
opposite number
Two different numbers that have the same absolute value. Example: 4 and -4 are opposite numbers because both have an absolute value of 4.
Parallel Lines
coplanar lines that do not intersect
Pi (Π π)
is the cicumference of a circle.
Perimeter
The distance around a figure.
Perfect Square
a square of a whole number for example 6*6=36
PEMDAS
Parentheses, Exponents, Multiplication, Division, Addition, Subtraction
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