188 terms

addend

Any number being added.

area model

A model of multiplication that shows each place value product within a rectangle drawing.

array

An arrangement of objects in equal rows

area

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

associative property of multiplication

The product stays the same when the grouping of factors is changed. (a x b) x c = a x (b x c), where a, b, and c stand for any real numbers.

acute angle

An angle with a measure less than 90 degrees

angle

two rays that share an endpoint

bar graph

A graph that uses the height or length of rectangles to compare data.

associative property of addition

The sum stays the same when the grouping of addends is changed (a+b) + c = a + (b + c), where a, b, and c stand for any real numbers.

algorithm

A step - by - step method for computing

attribute

A characteristic e.g. size, shape, or color

centimeter (cm)

A metric unit of length equal to 0.01 of a meter. 100 cm = 1 m

congruent

Having exactly the same size and shape

angle measure

The measure of the size of an angle. It tells how far one side is turned from the other side. A one degree angle turns through 1/360 of a full circle.

common multiple

Any common multiple of two or more numbers

commutative property of multiplication

The product stays the same when the order of the factors is changed. a x b = b x a, where a and b are any real numbers.

corresponding terms

Terms that are in the same position in a sequence of numbers.

In the pattern shown, 9 and 18 are the 3rd terms in each sequence - they are corresponding terms.

In the pattern shown, 9 and 18 are the 3rd terms in each sequence - they are corresponding terms.

compare

To decide if one number is greater than, less than, or equal to another number

customary system

A system of measurement used in the US. The system included units for measuring length, capacity, and weight.

braces

Braces can be used to indicate that the objects written between them belong to a set.

commutative property of addition

The sum stays the same when the order of the addends is changed. a + b = b + a, where a and b are any real numbers.

brackets

A type of grouping symbol used in pairs that tells what operation to complete first.

benchmark fractions

Fractions that are commonly used for estimation

common denominator

For two or more fractions, a common denominator is a common multiple of the denominators.

comparison bars

Used to represent larger and smaller amounts in a comparison situation. Can be used to represent all four operations. Different lengths of bars are drawn to represent each number.

denominator

The quantity below the line in a fraction. It tells how many equal parts are in the whole.

difference

The amount that remains after one quantity is subtracted from another.

dividend

A quantity to be divided.

digit

Any of the symbols 0, 1, 2, 3, 4, 5, 6, 7, 8, or 9.

cube

A rectangular solid having six congruent square faces.

divide

To separate into equal groups and find the number in each group or the number of groups.

distributive property

When one of the factors of a product is a sum, multiplying each addend before adding does not change the product.

divisor

The quantity by which another quantity is to be divided.

line plot

Also known as a data plot. A diagram showing frequency of data on a number line.

equal

Having the same value

equal groups

Groups that contain the same number of objects. Whenever you divide, you separate items into equal groups.

estimate

To find a number close to an exact amount; an estimate tells about how much or about how many.

factor

An integer that divides evenly into another.

finite decimal

A decimal that contains a terminating number of digits. (Also called a terminating decimal.)

equation

A mathematical sentence with an equals sign. The amount on one side of the equals sign has the same value as the amount of the other side.

equivalent

Naming the same number.

equivalent fractions

Fractions that have the same value

expression

A variable or combination of variables, numbers, and symbols that represents a mathematical relationship.

evaluate

To find the value of a mathematical expression.

fraction

A way of representing part of a whole or part of a group by telling the number of equal parts in the whole and the number of parts you are describing.

capacity

refers to the amount of liquid a container can hold

classify

To sort into categories or to arrange into groups by attributes.

cup (c)

A customary unit of capacity.

1 cup = 8 fluid ounces

1 cup = 8 fluid ounces

decimal fraction

A fractional number with a denominator of 10 or power of 10. usually written with decimal point.

decimal point

A dot (.) separating the whole number from the fraction in decimal notation.

expanded form

A way to write numbers that shows the place value of each digit.

circle

A place figure with all points the same distance from a fixed point called a center.

composite number

A number greater than 0 that has more than two different factors.

decimal

A fractional number with a denominator of 10 or a powder of 10. Usually written with a decimal point.

decimal notation

A number containing a decimal point.

degree

A unit for measuring angles. Based on dividing one complete circle into 360 equal parts.

factor pairs

A set of two numbers when multiplied, will result in a given product.

graph

A pictorial device used to show a numerical relationship.

formula

A general equation or rule. You can use a formula to find volume formula to find volume in a rectangular prism.

improper fraction

A fraction where the numerator is greater than or equal to the denominator.

horizontal

Line going left to right, like the horizon

foot (ft)

A customary unit of length. 1 foot = 12 inches

gram (g)

The standard unit of mass in the metric system.

greater than

Greater than is used to compare two numbers when the first number is larger than the second number.

hour (hr)

Units of time.

1 hour = 60 minutes

24 hours = 1 day

1 hour = 60 minutes

24 hours = 1 day

long divisions

A standard procedure suitable for dividing simple or complex multi-digit numbers.

gallon (gal)

A customary unit of capacity.

1 gallon = 4 quarts

1 gallon = 4 quarts

hundredth

One of the equal parts when a whole is divided into 100 equal parts

least common multiple

LCM. The smallest common multiple of a set of two or more numbers.

less than

Less than is used to compare two numbers when the first number is smaller than the second number.

identity property of multiplication

If you multiply a number by one, the product is the same product is the same as that number.

is not equal to

is not the same as

metric system

A system of measurement based on tens. The basic unit of capacity is the liter. The basic unit of length is the meter. The basic unit of mass is the gram.

mixed number

A number with an integer and a fraction part.

multiple

A product of a whole number and any whole number.

identity property of addition

If you add zero to a number, the sum is the same number.

inch (in)

A customary unit of length.

12 inches - 1 foot

12 inches - 1 foot

key

A part of a map, graph, or chart that explains what the symbols mean

kilogram (kg)

A metric unit of mass equal to 1000 grams.

multiplicative identity of property of 1

Multiplying a number by one gives a product identical to the given number. Also known as Identity Property of Multiplication.

least common denominator (LCD)

is the smallest whole number that is divisible by each of the denominators. of two or more fractions

hundredths

In the decimal numeration system, hundredths is the name of the next place to the right of tenths.

inverse operations

Operations that undo each other.

length

How long something is. The distance from one point to another. Length is measured in units such as inches, feet, centimeters, etc.

ordered pair

A pair of numbers that gives the coordinates of a point on a grid in this order (horizontal coordinate, vertical coordinate).

lowest terms

When a fraction is expressed with the fewest possible pieces, it is in lowest terms. (Also called simplest form.)

milliliter (mL)

A metric unit of capacity.

1000 milliliters = 1 liter.

1000 milliliters = 1 liter.

intersecting lines

Lines that cross at a point.

kilometer (km)

A metric unit of length equal to 1000 meters.

like denominators

Denominators in two or more fractions that are the same.

liter (L)

The basic unit of capacity in the metric system.

1 liter = 1000 milliliters

1 liter = 1000 milliliters

mile

A customary unit of length.

1 mile = 5280 feet

1 mile = 5280 feet

millimeter (mm)

A metric unit of length.

1000 millimeters = 1 meter

1000 millimeters = 1 meter

mass

The amount of matter in an object. Usually measured by comparing with an object of known mass. While gravity influences weight, it does not affect mass.

order of operations

An order, agreed on by mathematicians, for performing operations to simplify expressions.

parallell lines

Lines that are always the same distance apart.

parentheses ( )

Used in mathematics as grouping symbols for operations. When simplifying an expression, the operations within the parentheses are performed first.

pentagon

A polygon that has five sides.

obtuse angle

An angle with a measure greater than 90 degree but less than 180 degree

numerator

The number written above the line in a fraction. It tells how many equal parts are described in the fraction.

number line

A diagram that represents numbers as points on a line.

parallelogram

A quadrilateral with two pairs of parallel and congruent sides.

pattern

A repeating or growing sequence or design. An ordered set of numbers or shapes arranged according to a rule.

minute (min)

one sixtieth of an hour or 60 seconds.

perimeter

The distance around a figure.

percent

A special ratio that compares a number to 100 using the symbol %.

picture graph

A graph that uses pictures or symbols to show data.

prism

A 3-dimensional figure that has two congruent and parallel faces that are polygons. The remaining faces are parallelograms.

perpendicular lines

Two intersecting lines that form right angles.

plane figure

A two - dimensional figure.

polygon

A closed plane figure made by line segments.

ounce (oz)

A customary unit of weight equal to one sixteenth of a point. 16 ounces = 1 pound

place value

The value of the place of a digit in a number

product

The answer to a multiplication problem.

pyramid

A polyhedron whose base is a polygon and whose other faces are triangles that share a common vertex

quadrilateral

A four sided polygon

plane

A flat surface that extends infinitely in all directions

quotient

The answer to a division problem.

proper fraction

A fraction less than one. In a proper fraction the numerator is less than the denominator.

remainder

The number that is left over after a whole number is divided equally by another.

rhombus

A quadrilateral with all four sides equal in length.

scale (on a graph)

The numbers that show the units on a graph.

sequence

A set of numbers arranged in a special order or pattern

pint (pt)

A customary unit of capacity. 1 pint = 2 cups

rectangle

A quadrilateral with two pairs of congruent, parallel sides and four right angles.

simplest form

A fraction is in simplest form when the greatest common factor of the numerator and denominator is 1.

rounding

To strategy to find about how much or how many by expressing a number closest to ten, hundred, thousand, or tenth, hundredth, thousandth, etc.

solid figure

A geometric figure with 3 dimensions.

side of a polygon

Any of the line segments that form a polygon.

straight angle

An angle that is exactly 180 degrees - a straight line

standard form

A number written with one digit for each place value.

square unit

A unit, such as square centimeter or square inch, used to measure area.

subtract

An operation that gives the difference between two numbers. Subtraction can be used to compare two numbers, or to find our how much is left after some is taken away.

three-dimensional

3-D. Existing in 3 dimensions; having length, width, and height.

right triangle

A triangle that has one 90 degree angle.

square

A parallelogram with four equal angles AND four equal sides.

sum

The result of addition.

table

An organized way to list data. Tables usually have rows and columns of data.

protractor

A tool used to measure and draw angles.

right angle

An angle that measures exactly 90 degrees/

thousandth

one of 1000 equal parts of a whole.

trapezoid

A quadrilateral with one pair of parallel sides and one pair of sides that are not parallel.

unit fraction

A fraction that has 1 as its numerator.

vertex

A point at which two or more sides of a geometric figure meet.

Vertices is plural of vertex.

Vertices is plural of vertex.

whole numbers

Whole numbers are zero and the counting numbers 1, 2, 3, 4, 5, 6, and so on. If a number has a negative sign, a decimal point, or a part that's a fraction, it is not a whole number.

inequality

A mathematical sentence that compares two unequal expressions using one of the symbols <, >. or ≠. ex: 26 > 13; 13 < 26; 2 + 4 < 6 + 3

prediction

To state in advanace on the basis of observation, experience, or scientific reason.

triangle

A polygon with three sides and three angles

two-dimensional

Having length and width. Having area, but not volume. Also called a plane figure.

volume

The number of cubic units it takes to fill a figure.

weight

The measure of how heavy something is.

intersect

To meet or cross.

word form

A way of using words to write a number. Also called number names.

yard (yd)

A customary unit of length. 1 yard = 3 feet or 36 inches

meter (m)

A standard unit of length in the metric system.

base of a solid figure

A base of a solid figure is usually thought of as a face upon which it can "sit." Most solid figures have more than one base.

edge

The place where two flat surfaces of a solid figure meet.

probability

The chance that a particular outcome will occur, measured as a ratio of the total possible outcomes.

diameter

a line segment that passes through the center of the circle with endpoints on the circle.

zero property of multiplication

The product of any number and zero is zero.

multiply

The operation of repeated addition of the same number.

line graph

a graph made of points connected by lines. This type of graph is used to show change over time.

face

A flat surface on a solid figure.

greatest common factor

GCF The largest factor of two or more numbers.

mean

The sum of a set of numbers divided by the number of elements in the set. (A type of average)

frequency table

A table that lists a set of numbers or categories and their frequency (how many times each one occurs)

range

The difference between the greatest number and the least number in a set of numbers.

deposit

to put or leave someone or something in a particular place , often to put money in a bank account

vertical

A line going up and down

balanced

When both sides have the same quantity or mass

fair number cube

are mostly used to generate random numbers in an equal manner, meaning each number has an equal, or a one in six, chance of being rolled

ray

A portion of a line which starts at a point and goes off in a particular direction to infinity

Venn diagram

a diagram that uses circles to represent sets and their relationships

withdraw

to remove or take away something in a particular place , often to remove money from a bank account

data

A collection of information

cubic unit

A unit such as a cubic meter to measure volume or capacity.

pound

A customary unit of weight.

1 pound = 16 ounces.

1 pound = 16 ounces.

quart

A customary unit of capacity.

1 quart = 2 pints

or

1 quart = 4 cups

1 quart = 2 pints

or

1 quart = 4 cups

simplify

To express a fraction in simplest form.

unit cube

A precisely fixed quantity used to measure volume.

variable

A letter or symbol that represents a number.

tenths

In the decimal numeration, tenths is the name of the place to the right of the decimal point.

thousandths

the name of the next place to the right of hundredths in the decimal numeration system.

prime number

A whole number greater than 0 that has exactly two different factors, 1 and itself.

second

One sixtieth of a minute. There are 60 seconds in a minute.

tenth

One of the equal parts when a whole is divided into 10 equal parts.

unlike denominators

Denominators that are not equal.

axis

A reference line from which distances or angles are measured in a coordinate grid. (plural - axes)