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75 Cards in this Set
 Front
 Back
Whole Numbers

zero and the counting numbers: 1,2,3,4,5,6 and so on


Inequality

a mathermatical sentence that compares two unequal expressions using symbols  less than, greater than, not equal


Place Value

the value of a digit based on its position in a number


Expanded Form

a number written as the sum of the value of it digits
4,000 + 300 + 90 + 2 

Digit

any of the ten symbols
0,1,2,3,4,5,6,7,8,9 

Rounding

expressing a number to the nearest ten, hundred, and thousand


Period

a group of 3 digits separated from tother digits of a number by a comma
ones, thousands, millions, billions 

Word Form

a number written as words
four thousand, three hundred ninetytwo 

Standard Form

a number written with one digit for each place value
4,392 

Equation

a number sentence with an equal sign; the amount on one side of the equal sign has the same value as the amount on the other side


Compatible Numbers

numbers that are easy to work with mentally


Decompose

breaking apart numbers into smaller parts


Estimate

an approximate rather than an exact answer


Sum/Difference

the answers in addition and subtraction


Regroup

to use 1 ten to form 10 ones; 1 hundred to form 10 tens; 1 thousand to form 10 hundreds


Product

the answer to a multiplication problem


Factors

the numbers that are multiplied to give a product


Array

an arrangement of objects or numbers in rows and columns


Multiple

the product of a whole number and any other whole number


Clustering

using numbers that are close to a rounded number to make estimation easier


Quotient

the answer to a division problem


Remainder

the number that is left after dividing


Multiplication

the operation (x) of two or more numbers, called factors, to find a product


Division

the operation of making equal groups


Dividend

the number to be divided


Divisor

a number by which another number is divided


Divisible

capable of being divided without a remainder


Prime Number

a number that has exactly two different factors, itself and 1


Composite Number

a number that has more than two factors


Improper Fraction

a fraction in which the numerator is greater than or equal to the denominator; its value is greater than or equal to 1


Equivalent Fractions

fraction that have different numerators and denominators but name the same numbers


Proper Fractions

a fraction whose numerator is smaller than its denominator


Mixed Decimal

a whole number and a decimal


Numerator

the number that tells how many equal parts are described by the fraction


Unit Fraction

the name of each equal part; it has one as the numerator


Mixed Number

a number written as a whole number and a fraction


Equivalent Decimals

decimals that name the same number


Whole Number

any of the numbers 0, 1, 2, 3, and so on


Outcome

the result of a probability experiment


Double Bar Graph

a graph in which data is compared by means of pairs of rectangular bars drawn next to each other


Probability

the chance that an event will occur


Scale

a system of marks at fixed intervals used in measurment and graphing


Data

information that is gathered


Bar Graph

a graph with bars of different lengths to show information


Tree Diagram

a diagram that shows combinations of outcomes of an event


Sample

a number of people, objects, or events chosen from a given population to represent the entire group


Elapsed Time

the amount of time that has passed


Unit

a precisely fixed quantity used to measure


Perimeter

the distance around a figure


A.M.

used to show time between midnight and noon


P.M.

used to show the time between noon and midnight


Acute Angle

an angle with a measure of less than 90 degrees


Right Angle

an angle with a measure of exactly 90 degrees


Obtuse Angle

an angle with a measure that is greater than 90 degrees


Parallel Lines

lines that are the same distance apart at all points. These lines will never intersect.


Perpendicular Lines

lines that intersect to form right angles


Intersecting Lines

lines that meet or cross at a point


Point

an exact location in space


Line

an endless collection of points along a straight path that goes on forever


Line Segment

part of a line that has 2 endpoints


Line of Symmetry

a line that divides a figure into two congruent halves that are mirror images of each other


Plane Figure

any 2dimensional figure such as circles and polygons


Space/Solid Figure

a geometric figure with 3 dimensions


Geometry

the mathematics of the properties and relationships of points, lines, angles, surfaces, and solids


Prism

a solid that is formed by the union of all the line segments that connect corresponding points on two congruent polygons that are located in parallel planes


Pyramid

a space figure whose base is a plane figure and whose faces are triangles with a common corner


Base

the flat side of a cylinder or cone: the flat side of a polyhedron that gives the shape its name


Quadrilateral

a polygon with 4 sides


Customary System

a measurement system that measures length in inches, feet, yards, and miles; capacity in cups, pints, quarts, and gallons; weight in ounces, pounds, and tons; and temperature in degrees Fahrenheit


Metric System (SI)

a measurement system that measures length in millimeters, centimeters, meters, and kilometers; capacity in millimeters and liters; mass in grams and kilograms; and temperature in degrees Celsius


Capacity

the maximum amount that can be contained by an object; often refers to measurement of a liquid


Area

the measure, in square units, of the interior region of a 2dimensional figure or the surface of a 3dimensional figure


Mass

the amount of matter in an object


Length

the distance along a line or figure from one point to another


Weight

a measure of the heaviness of an object
