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two numbers that are the same distance from 0 on a number line, but in opposite directions
order of operations
1.work inside grouping symbols2.multiply and divide from left to right3.add and subtract from left to right
one whole number is xxxx by a second whole number if the remainder is 0 when you divide the 1st number by the 2nd
greatest common factor
of two or more numbers is the greatest number that is a factor of all the numbers
least common denominator
of two or more fractions is the least common multiple of their denominators
least common multiple
of two or more numbers is the least multiple that is common to all the numbers (lcm of 3 and 4 is 12)
a whole number with exactly two factors, 1 and the number itself. the number 1 is neither prime or composite
a number that can be written as a quotient of two integers, where the divisor is not 0. 2/5, -6, 3 1/2,
if the same block of digits in a decimal repeats without end, the decimal is a xxx
a xxxx is a convenient number used to replace fractions that are less than 1. 7/8 ---> 1, 4/9--->1/2
the xxxx of a measurement refers to its degree of exactness. The marks on a scale or other intrument tell you the xxxx that is possible
two numbers are xxxx if their product is 1. To divide by a fraction, multiply by its XXXX
for two ratios, the xxxxx are found by multiplying the denominator of one ratio by the numerator of the other ratio
you can use XXX to measure distances that are difficult to measure directly. Use proportions and similar triangles
a XXX is an enlarged or reduced drawing of an object that is similar to the actual object
2 polygons are XXX if 1)corresponding angles have the same measure, and 2)the lengths of corresponding sides form equal ratios
the difference between the selling price and the orig. cost, or the store's cost, of an item is called the XXX
percent of change
the XXX is the percent a quantity increases or decreases from its original amount. amount of change/original amount = percent of change/100
a closed plane figure with sides formed by three or more line segments. the sides only meet at their endpoints
formed by two intersecting lines and are opposite each other. xxx angles have equal measures.
has two congruent parallel bases that are circles. the height of a xxx is the length of a perpendicular segment that joins the bases
in a right triangle, the two shortest sides are legs. the side oppposite the 90 angle is the hypotenuse
a number that cannot be written as a ratio of two integers. As decimals, xxx numbers neither terminate or repeat
a 3-dim figure with 2 parallel and congruent polygonal faces, called bases. the other faces are rectangles.
in any right triangle, the sum of the squares of the lengths of the legs is equal to the square of the length of the hypotenuse
xx of a 3 dim. figure is the number of cubic units needed to fill the space inside the figure
3 dim. figure with triangular faces that meet at one point,vertex, and a base that is a polygon. named for the shape of the base
quadrilateral with both pairs of opposite sides parallel 3 special types:rectangle,rhombus,square
a series of points that extend in two opposite directions without end. You name a line by any two points on the line or a lowercase letter.
is part of a line with one endpoint and all the points of the line on one side of the endpoint. you name a ray using two points, starting with the endpoint
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