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6th Grade Math Vocabulary (Units 1, 2, 3)
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Key Concepts:
Terms in this set (51)
basic ratio
a ratio in simplest form
equivalent ratios
ratios that represent the same comparison and have the same basic ratio
constant rate
Going up or down by the same amount.
factor
a number that is multiplied by another number to find a product
coordinate plane
A coordinate system formed by the intersection of a horizontal number line, called the x-axis, and a vertical number line, called the y-axis.
greatest common factor (GCF)
the largest factor that two or more numbers share
ordered pair
Two numbers that are inside parentheses and have a comma in between them. They represent points on the coordinate plane and are written as (x, y).
rate table
A table that shows the value of a single item in terms of another item.
product
the answer to a multiplication problem
ratio table
a table of equivalent ratios
proportion
a statement that two ratios are equivalent
equivalent
equal
unit rate
the value associated with 1 unit (examples: 5 miles per hour, 3 dollars every week, 2 apples each day)
unit price
The unit rate associated with a price or cost. Example: 4 dollars per pound
x axis
the horizontal number line in a coordinate plane
y axis
the vertical number line in a coordinate plane
x coordinate
The first number of an ordered pair. It corresponds to a number on the x-axis.
y coordinate
The second number of an ordered pair. It corresponds to a number on the y-axis.
acute triangle
a triangle with 3 acute (less than 90 degree) angles
area
The amount of surface covered or enclosed by a figure. It is measured by finding the number of same size units required to cover the shape without gaps or overlaps.
complex figure
A figure made by combining simple geometric figures, such as rectangles and triangles.
dimensions
Measurements in width, length, or height
hexagon
a polygon with 6 sides
obtuse triangle
A triangle with one angle that is greater than 90 degrees.
pentagon
a polygon with 5 sides
octagon
a polygon with 8 sides
perimeter
The distance around a figure
parallelogram
A quadrilateral with two pairs of parallel sides
perpendicular
Two lines that intersect to form right (90 degree) angles
parallel
lines that are always the same distance apart and never touch
regular polygon
a polygon with all sides and all angles equal
rhombus
A parallelogram with four equal sides
right triangle
A triangle that has a right (90 degree) angle.
trapezoid
A quadrilateral with exactly one pair of parallel sides.
vertex
A point where two or more straight lines meet and create an angle.
denominator
The bottom number in a fraction. It tells how many equal parts are in the whole.
numerator
The top number in a fraction. It tells how many equal parts are described in the fraction.
common denominator
A denominator that is the same in two or more fractions. You need this to add or subtract fractions.
dividend
the number that is being divided
divisor
the number you divide by
quotient
the answer to a division problem
common factor
A number that is a factor of two or more numbers
least common multiple (LCM)
The smallest multiple that two or more numbers have in common
equivalent fractions
Fractions that have the same value
estimate
A number that is not exact; a careful guess.
inverse operations
operations that undo each other (for example: multiplication and division; addition and subtraction)
reciprocal
a flipped fraction (5/8 --> 8/5)
remainder
the amount left over when a number cannot be divided equally
mixed number
a number made up of a whole number and a fraction
improper fraction
a fraction whose numerator is larger than the denominator
simplest form
the form of a fraction when the numerator and denominator have no common factor other than 1
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