addend

Numbers that are added = 6 addend

angle

the figure made by 2 rays that extend from a common endpoint

area

The number of square units needed to cover a surface Area=12 square units

bar graph

a graph that uses horizontal or vertical bars to represent data Favorite Pets

base (of a figure)

A special face or pair of faces on a 3-dimensional figure

capacity

a measure of the amount of liquid a container will hold

centimeter (cm)

a metric unit used to measure length

certain

in probability, something that will surely happen

chart

a diagram that illustrates information in the form of a table, graph, or picture

closed figure

a figure that begins and ends at the same point

cone

a 3-dimensional shape with a circular base, a curved surface, and one vertex base vertex

congruent

figures that are the same size and same shape

cube

a 3-dimensional figure with 6 congruent square faces

cup (c)

a unit for measuring capacity 1 cup = 8 fluid ounces

customary system of measurement

the measurement system used most often in the United States Length – inches, feet, yards, miles Weight – ounces, pounds, tons Capacity – ounces, cups, pints, quarts, gallons

cylinder

a 3-dimensional shape with 1 curved surface and 2 circular bases that are parallel and congruent

decrease

To get smaller in size or number 10, 9, 8, 7, 6

degree ( 0 )

a unit of measure for temperature and for angles

denominator

The bottom number in a fraction; the total number of equal parts 1 3 denominator

diagonal

a straight line connecting 2 non- adjoining corners of a polygon diagonal

difference

The answer to a subtraction problem = 1 difference

digits

The symbols 0,1,2,3,4,5,6,7,8, and 9 used to write numbers

dozen

A group or set of 12 A dozen eggs

edge

the line segment where two faces of a solid figure meet edge

equally likely

Outcomes having the same chance of happening It is equally likely that you will spin a 1,2,3, or 4.

equation

A number sentence that uses the equals sign to show that two amounts are equal 8 x 5 = – 14 = 9

equivalent

equal in value or amount =

equivalent fractions

2 or more fractions that are equal =

estimate

Noun: an answer that is close to the exact answer ≈ 40 verb: to guess about The children will estimate how many french fries are in the Happy Meal.

expanded form

A way to write numbers that shows the value of each digit 1,456 = 1,

face

a flat surface of a polyhedron face

fact family

A set of related number sentences = 7 5 x 2 = 10 7 – 3 = 4 10  2 = = 7 2 x 5 = 10 7 – 4 = 3 10  5 = 2

factor

A number that is multiplied by another number to find a product 3 x 7 = 21 3 and 7 are factors of 21.

Farenheit ( 0 )

A unit of measure for temperature The temperature is F. 0F0F 0C0C

foot (ft)

A customary unit used to measure length 12 inches = 1 foot

fraction

A number that names a part of a whole or part of a group 3 of the set is hearts. 4

gallon (gal)

A customary unit used to measure capacity 4 quarts = 1 gallon

gram (g)

a metric unit used to measure mass. a paper clip weighs about 1 gram.

greater than (<)

The symbol used to compare 2 numbers when the larger number is on the left 34 > is greater than 28

height

The distance from top to bottom

hexagon

a 6-sided polygon

horizontal

The direction from left to right; parallel to the horizon.

vertical

The direction from up to down; perpendicular to the horizon.

hour

a unit used to measure time There are 24 hours in a day.

inch (in.)

a customary unit used to measure length

increase

To get larger in size or number 2,3,4,5,6

kilogram (kg)

A metric unit used to measure mass 1 kg = 1000 g A brick weighs about 1 kilogram.

kilometer (km)

A metric unit used to measure length 1 km = 1,000 m

least likely

An event that has the smallest chance of happening the spinner is least likely to spin a

less than (>)

The symbol used to compare 2 numbers when the smaller number is on the left 45 > is less than 98

line of symmetry

A line that divides a figure into halves, making a mirror image

liter (L)

A metric unit used to measure capacity 1 L = 1,000 mL This bottle holds 2 liters.

meter (m)

A metric unit used to measure length or distance 1m = 100 cm

metric system unit of measurement

a measurement system used throughout the world based on multiples of 10 length – millimeters, centimeters, meters, kilometers weight – milligrams, grams, kilograms capacity – mililiters, centiliters, liters, kiloliters

mile (mi)

A customary unit used to measure length or distance 1 mi = 5,280 ft 1 mi = 1,760 yd

milliliter (mL)

a metric unit used to measure capacity 1,000 mL = 1 L

millimiter (mm)

a metric unit used to measure length 10 mm = 1 cm

minute

A unit used to measure time There are 60 minutes in an hour.

most likely

An event that has the greatest chance of happening It is most likely that you will spin a

number line

A line on which points correspond to numbers

numerator

The bottom number in a fraction; how many equal parts are being considered 1 numerator 3

octagon

An 8-sided polygon A stop sign is an octagon.

Open figure

A figure that does not begin and end at the same point

ounce (oz)

A customary unit used to measure weight or capacity weight16 oz = 1 lb capacity 8 oz= 1 c

parallelogram

A quadrilateral with opposite sides that are parallel and congruent

pattern

A regularly-repeated arrangement of numbers, letters, or shapes, etc. shape pattern number pattern 3, 6, 9, 12, 15, 18, 21 ….

pentagon

A 5-sided polygon

perimeter

3 in. 2 in 3 in The distance around a closed figure The perimeter is 10 inches.

pictograph

A graph that uses pictures or symbols to represent collected data

pint (pt)

A customary unit used to measure capacity = 2 c = 1 pt and 2 pt = 1 qt

place value

The value determined by the position of a digit in a number

polygon

A closed figure made of line segments

possible outcomes

Possible results in a probability experiment

pound (lb)

A customary unit used to measure weight 1 lb = 16 oz 2,000 lb = 1 ton

prism

a 3-dimensional shape with two parallel, congruent bases; all other faces are parallelograms

probability

A number used chance that an to describe the event will occur P = number of favorable outcomes number of possible outcomes

product

The answer to a multiplication problem 7 x 6 = 42 product

pyramid

A 3-dimensional shape whose base is a polygon; all other faces are triangle

quadrilateral

A four-sided polygon

quart

A customary unit used to measure capacity = 2 pints = 1 quart

quotient

The answer to a division problem 4 56  7 = 8 8  32

Rectangular prism

A 3-dimensional figure with 6 rectangular faces

regroup

To rename a number 10 ones = 1 ten 10 tens = 1 hundred

regular polygon

A polygon in which all sides are the same length and all angles have the same measure

rhombus

A parallelogram whose four sides are congruent and whose opposite angles are congruent

right angle

An angle with a measure of 90 0

second

A unit used to measure small amounts of time There are 60 seconds in a minute.

sphere

A 3-dimensional shape with all points an equal distance from the center

standard form

A number written with one digit for each place value ten = 10 four thousand thirty two = 4,032

sum

The answer to an addition problem = 11 sum

symbol

A printed mark used to represent an operation or abstract idea +, -, x, , ≈, >, etc…

symmetry

Having the same size and shape across a dividing line

table

Information organized in columns and rows SeasonBirthdays Fall11 Winter9 Spring13 Summer12 TEACHERS’ BIRTHDAYS

Tally mark

A mark used to keep track of data being counted Student Number of Push-ups John llll llll ll Michelle llll llll llll l Sarah llll llll l Joe llll ll PUSH UPS

temperature

The measure of how hot or cold something is 0F0F 0C0C The temperature is F. The temperature is 38 0 C.

3-dimensional figure

A solid figure that has length, width, and height

ton (T)

A customary unit used to measure weight 1T = 2,000 lb

trapezoid

A quadrilateral with exactly one pair of parallel sides

triangular prism

A 3-dimensional shape with two congruent triangular bases; other faces are parallelograms

2-dimensional figure

A plane figure that has length and width

Vertex/vertices

The point where 2 rays meet, where two sides of a polygon meet, or where the edges of a polyhedron meet; the top point of a cone or pyramid vertices vertex

yard

A customary unit for measuring length or distance 3 feet = 1 yard 36 inches = 1 yard