69 terms

standard form

writing a number using numbers;15,264

word form

writing a number using words

expanded form

writing a number using each number's value; 10,000 + 5,000 + 200 + 60 + 4

even

a whole number that has a 0, 2, 4, 6, or 8 in the ones place

odd

a whole number that has a 1, 3, 5, 7, or 9 in the ones place

place value

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

round

write a number to the nearest ten, hundred, thousand

compare

decide if numbers are equal to, less than, or greater than each other

regroup

use 1 ten to form 10 ones; 1 hundred to form 10 tens, and so on

addition

the opposite operation of subtraction

difference

the answer in a subtraction problem

commutative property of addition

you can add numbers in any order

identity property of addition

the property that states that when you add 0 to a number, the result is that number;

6 + 0 = 6

6 + 0 = 6

inverse operations

the operation that is opposite of each other; + and -; x and division

fact family

a set of related addition and subtraction, or multiplication and division, number sentences

multiply

when you combine equal groups, you can multiply to find how many in all

commutative property of multiplication

you can multiply numbers in any order

identity property of multiplication

the property that states that when you multiply a number by 1, the product will be that number; 6 x 1 = 6

factor

the numbers that are multipled to find a product

multiple

the product of a given whole number and another whole number; multiples of 3: 3, 6, 9, 12, 15, 18, 21, 24, 27...

array

an arrangement of objects in rows and columns

product

the answer in multiplication

divide

to separate things into equal groups

quotient

the answer in division

dividend

the number to be divided

divisor

the number by which another number is divided

remainder

the amount left over after dividing

half hour

30 minutes

quarter hour

15 minutes

quarter til

15 minutes until the next hour; 45 minutes has passed

quarter after

15 minutes after the hour

bar graph

a bar that uses bars to show data

pictograph

a graph that uses pictures to show and compare information

line plot

a graph that uses an x or another symbol to represent the data

fraction

part of a whole

equivalent

two or more sets that name the same amount

proper fraction

the numerator is smaller than the denominator showing it is less than 1

numerator

the part of a fraction above the line, which tells how many parts are being counted

denominator

the part of a fraction below the line which tells how many equal parts there are in the whole or in the group

mixed number

a whole number and a fraction

area

the number of square units needed to cover a flat surface

perimeter

the distance AROUND a closed figure

capacity

the amount a container can hold

mass

the amount of matter that on object contains

volume

the capacity or amount of space inside a 3-D shape; length x height x width

Celsius

used to measure temperature in the metric system

Fahrenheit

used to measure temperature in the customary system

plane figure

a 2-dimensional figure (flat); classified by the number of angles, sides, and vertices; circle, triangle, rectangle

quadrilateral

a polygon with 4 sides: square, rectangle, trapezoid, rhombus, kite, parallelogram

similar figures

figures that have the same shape, but not the same size

line of symmetry

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

congruent

have the same shape and the same size

solid figure

three-dimensional figure; takes up space; cyclinder, rectangular prism; sphere

vertex

a corner of a solid figure where three or more edges meet; plural form (vertices)

edge

a line segment where two faces of a solid figure meet

face

the flat surface of a solid figure

angle

a figure formed by two rays or line segments that share an endpoint (vertex)

right angle

an angle whose rays meet to form perpendicular lines at a 90 degree angle

acute angle

an angle that is less than a (90) right angle

obtuse angle

an angle that is greater than a right angle (90 degrees) but less than a straight angle (180 degrees)

straight angle

an angle that measures 180 degrees; a straight line

perpendicular lines

lines that intersect at a right angle (90 degrees)

intersecting lines

lines that cross or will cross at one point

parallel lines

lines that will never cross

centimeter

a metric unit used to measure length or distance

probability

the chance that a given event will happen

certain

an event will always happen

equally likely

having the same chance of happening

impossible

an event that will NEVER happen