addendaddend

Numbers that are addedNumbers that are added

4 + 2 = 64 + 2 = 6

addend addend

angleangle

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

areaarea

The number of The number of square units square units needed to cover needed to cover a surfacea surface

Area=12 square units

bar graphbar graph

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

0

5

10

15

20

25

30

35

Girls Boys

Cats

Dogs

Other

Favorite Pets

basebase(of a figure)(of a figure)

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

capacitycapacity

a measure of the amount of a measure of the amount of liquid a container will holdliquid a container will hold

centimeter (cm)centimeter (cm)

a metric unit used to measure a metric unit used to measure lengthlength

certaincertain

in probability, something that in probability, something that will surely happenwill surely happen

chartchart

a diagram that illustrates a diagram that illustrates information in the form of a table, information in the form of a table,

graph, or picturegraph, or picture

0

10

20

30

40

50

60

70

80

90

1st Qtr 2nd Qtr 3rd Qtr 4th Qtr

East

West

North

closed figureclosed figure

a figure that begins and ends at the a figure that begins and ends at the same pointsame point

conecone

a 3-dimensional shape with a a 3-dimensional shape with a circular base, a curved surface, circular base, a curved surface,

and one vertexand one vertex

base

vertex

congruentcongruent

figures that are the same size and figures that are the same size and same shapesame shape

cubecube

a 3-dimensional figure with 6 a 3-dimensional figure with 6 congruent square facescongruent square faces

cup (c)cup (c)

a unit for measuring capacitya unit for measuring capacity

1 cup = 8 fluid ounces

customary system customary system of measurementof measurement

the measurement system used the measurement system used most often in the United Statesmost often in the United States

Length – inches, feet, yards, miles

Weight – ounces, pounds, tons

Capacity – ounces, cups, pints, quarts, gallons

cylindercylinder

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

congruentcongruent

decreasedecrease

To get smaller in size or numberTo get smaller in size or number

10, 9, 8, 7, 610, 9, 8, 7, 6

degree (degree (00))

a unit of measure for temperature a unit of measure for temperature and for anglesand for angles

denominatordenominator

The bottom number in a fraction; The bottom number in a fraction; the total number of equal partsthe total number of equal parts

11 3 3 denominatordenominator

diagonaldiagonal

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

diagonal

differencedifference

The answer to a subtraction The answer to a subtraction problemproblem

5 - 2 = 15 - 2 = 1 differencedifference

digitsdigits

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

dozendozen

A group or set of 12A group or set of 12

A dozen eggs

edgeedge

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

edge

equally likelyequally likely

Outcomes having the same Outcomes having the same chance of happeningchance of happening

1 2

3 4

It is equally likely that you will spin a 1,2,3, or 4.

equationequation

A number sentence that uses the A number sentence that uses the equals sign to show that two equals sign to show that two

amounts are equalamounts are equal

8 x 5 = 40 23 – 14 = 98 x 5 = 40 23 – 14 = 9

equivalentequivalent

equal in value or amountequal in value or amount

= =

equivalent fractionsequivalent fractions

2 or more fractions that are 2 or more fractions that are equalequal

11 22 4 84 8=

estimateestimate

Noun: an answer that is close to the Noun: an answer that is close to the exact answerexact answer23 + 19 ≈ 4023 + 19 ≈ 40

verb: to guess aboutverb: to guess about

The children will estimate how many The children will estimate how many french fries are in the french fries are in the Happy MealHappy Meal..

expanded formexpanded form

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

1,456 = 1,000 + 400 + 50 + 61,456 = 1,000 + 400 + 50 + 6

faceface

a flat surface of a polyhedrona flat surface of a polyhedron

face

fact familyfact family

A set of related number sentencesA set of related number sentences

4 + 3 = 7 5 x 2 = 104 + 3 = 7 5 x 2 = 107 – 3 = 4 10 7 – 3 = 4 10 2 = 5 2 = 53 + 4 = 7 2 x 5 = 103 + 4 = 7 2 x 5 = 107 – 4 = 3 10 7 – 4 = 3 10 5 = 2 5 = 2

factorfactor

A number that is multiplied by A number that is multiplied by another number to find a productanother number to find a product

3 x 7 = 213 x 7 = 21

3 and 7 are factors of 21.3 and 7 are factors of 21.

Farenheit (Farenheit (00))

A unit of measure A unit of measure for temperaturefor temperature

The temperature is 102The temperature is 10200 F. F.

0F 0C

foot (ft)foot (ft)

A customary unit used to measure A customary unit used to measure lengthlength

12 inches = 1 foot12 inches = 1 foot

fractionfraction

A number that names a part of a A number that names a part of a whole or part of a groupwhole or part of a group

33 of the set is hearts. of the set is hearts. 4 4

gallon (gal)gallon (gal)

A customary unit used to A customary unit used to measure capacitymeasure capacity

4 quarts = 1 gallon4 quarts = 1 gallon

gram (g)gram (g)

a metric unit used to measure a metric unit used to measure mass.mass.

a paper clip weighsa paper clip weighs

about 1 gram.about 1 gram.

greater than (<)greater than (<)

The symbol used to compare 2 The symbol used to compare 2 numbers when the larger number is numbers when the larger number is

on the lefton the left

34 > 2834 > 28

34 is greater than 2834 is greater than 28

heightheight

The distance from top to bottomThe distance from top to bottom

hexagonhexagon

a 6-sided polygona 6-sided polygon

horizontalhorizontal

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

verticalvertical

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

hourhour

a unit used to measure timea unit used to measure time

There are 24 hours in a day.There are 24 hours in a day.

inch (in.)inch (in.)

a customary unit used to measure a customary unit used to measure lengthlength

increaseincrease

To get larger in size or To get larger in size or numbernumber

2,3,4,5,62,3,4,5,6

kilogram (kg)kilogram (kg)

A metric unit used to measure A metric unit used to measure massmass

1 kg = 1000 g1 kg = 1000 g

A brick weighs about 1 kilogram.A brick weighs about 1 kilogram.

kilometer (km)kilometer (km)

A metric unit used to A metric unit used to measure lengthmeasure length

1 km = 1,000 m1 km = 1,000 m

least likelyleast likely

An event that has the smallest An event that has the smallest chance of happeningchance of happening

the spinner is least likely to spin a 1.the spinner is least likely to spin a 1.

1 2

2 2

less than (>)less than (>)

The symbol used to compare 2 The symbol used to compare 2 numbers when the smaller number numbers when the smaller number

is on the leftis on the left

45 > 9845 > 9845 is less than 9845 is less than 98

line of symmetryline of symmetry

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

liter (L)liter (L)

A metric unit used to measure A metric unit used to measure capacitycapacity

1 L = 1,000 mL1 L = 1,000 mL

This bottle holds 2 liters.

meter (m)meter (m)

A metric unit used to measure A metric unit used to measure length or distancelength or distance

1m = 100 cm1m = 100 cm

metric system unit metric system unit of measurementof measurement

a measurement system used a measurement system used throughout the world based on throughout the world based on

multiples of 10multiples of 10

length – millimeters, centimeters, meters, kilometerslength – millimeters, centimeters, meters, kilometersweight – milligrams, grams, kilogramsweight – milligrams, grams, kilograms

capacity – mililiters, centiliters, liters, kiloliterscapacity – mililiters, centiliters, liters, kiloliters

mile (mi)mile (mi)

A customary unit used to measure A customary unit used to measure length or distancelength or distance

1 mi = 5,280 ft1 mi = 5,280 ft1 mi = 1,760 yd1 mi = 1,760 yd

milliliter (mL)milliliter (mL)

a metric unit used to measure a metric unit used to measure capacitycapacity

1,000 mL = 1 L1,000 mL = 1 L

millimiter (mm)millimiter (mm)

a metric unit used to measure a metric unit used to measure lengthlength

10 mm = 1 cm10 mm = 1 cm

minuteminute

A unit used to measure timeA unit used to measure time

There are 60 minutes in an hour.There are 60 minutes in an hour.

most likelymost likely

An event that has the greatest An event that has the greatest chance of happeningchance of happening

It is most likely that you will spin a 2.It is most likely that you will spin a 2.

1 2

2 2

number linenumber line

A line on which points correspond to A line on which points correspond to numbersnumbers

1 2 3 4 5 6 71 2 3 4 5 6 7

numeratornumerator

The bottom number in a fraction; The bottom number in a fraction; how many equal partshow many equal partsare being consideredare being considered

11 numeratornumerator 3 3

octagonoctagon

An 8-sided polygonAn 8-sided polygon

A stop sign is an octagon.A stop sign is an octagon.

Open figureOpen figure

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

ounce (oz)ounce (oz)

A customary unit used to measure A customary unit used to measure weight or capacityweight or capacity

weightweight 16 oz = 1 lb16 oz = 1 lb

capacitycapacity 8 oz 8 oz = 1 c= 1 c

parallelogramparallelogram

A quadrilateral with opposite sides A quadrilateral with opposite sides that are parallel and congruentthat are parallel and congruent

patternpattern

A regularly-repeated A regularly-repeated arrangement of numbers, arrangement of numbers,

letters, or shapes, etc.letters, or shapes, etc.

shape patternshape pattern

number patternnumber pattern

3, 6, 9, 12, 15, 18, 21 ….3, 6, 9, 12, 15, 18, 21 ….

pentagonpentagon

A 5-sided polygonA 5-sided polygon

perimeterperimeter

3 in.

2 in 2 in

3 in

The distance around a The distance around a closed figureclosed figure

The perimeter is 10 inches.

pictographpictograph

A graph that uses pictures or A graph that uses pictures or symbols to represent collected datasymbols to represent collected data

pint (pt)pint (pt)

A customary unit used to A customary unit used to measure capacitymeasure capacity

==

2 c = 1 pt and 2 pt = 1 qt2 c = 1 pt and 2 pt = 1 qt

place valueplace value

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

polygonpolygon

A closed figure made of line A closed figure made of line segmentssegments

possible outcomespossible outcomes

Possible results in a probability Possible results in a probability experimentexperiment

pound (lb)pound (lb)

A customary unit used to A customary unit used to measure weightmeasure weight

1 lb = 16 oz1 lb = 16 oz2,000 lb = 1 ton2,000 lb = 1 ton

prismprism

a 3-dimensional shape with two a 3-dimensional shape with two parallel, congruent bases; all parallel, congruent bases; all

other faces are parallelogramsother faces are parallelograms

probabilityprobability

A number used chance that an A number used chance that an to describe the event will occurto describe the event will occur

PP = = number of favorable outcomesnumber of favorable outcomes number of possible outcomes number of possible outcomes

productproduct

The answer to a multiplication The answer to a multiplication problemproblem

7 x 6 = 427 x 6 = 42 productproduct

pyramidpyramid

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

faces are trianglefaces are triangle

quadrilateralquadrilateral

A four-sided polygonA four-sided polygon

quartquart

A customary unit used to A customary unit used to measure capacitymeasure capacity

==

2 pints = 1 quart2 pints = 1 quart

quotientquotient

The answer to a division The answer to a division problemproblem

4 4 56 56 7 = 8 8 7 = 8 832

Rectangular prismRectangular prism

A 3-dimensional figure with 6 A 3-dimensional figure with 6 rectangular facesrectangular faces

regroupregroup

To rename a numberTo rename a number

10 ones = 1 ten10 ones = 1 ten10 tens = 1 hundred10 tens = 1 hundred

regular polygonregular polygon

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

have the same measurehave the same measure

rhombusrhombus

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

right angleright angle

An angle with a measure of 90An angle with a measure of 9000

secondsecond

A unit used to measure small A unit used to measure small amounts of timeamounts of time

There are 60 seconds in a minute.There are 60 seconds in a minute.

spheresphere

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

the centerthe center

standard formstandard form

A number written with one digit A number written with one digit for each place valuefor each place value

ten = 10ten = 10four thousand thirty two = 4,032four thousand thirty two = 4,032

sumsum

The answer to an addition The answer to an addition problemproblem

4 + 7 = 114 + 7 = 11 sumsum

symbolsymbol

A printed mark used to represent A printed mark used to represent an operation or abstract ideaan operation or abstract idea

+, -, x, +, -, x, , ≈, >, etc…, ≈, >, etc…

symmetrysymmetry

Having the same size and shape Having the same size and shape across a dividing lineacross a dividing line

tabletable

Information organized in columns Information organized in columns and rowsand rows

SeasonSeason BirthdaysBirthdays

FallFall 1111

WinterWinter 99

SpringSpring 1313

SummerSummer 1212

TEACHERS’ BIRTHDAYS

Tally markTally mark

A mark used to keep track of data A mark used to keep track of data being countedbeing counted

StudentStudent Number of Number of Push-upsPush-ups

JohnJohn llll llll llllll llll ll

MichelleMichelle llll llll llll lllll llll llll l

SarahSarah llll llll lllll llll l

JoeJoe llll llllll ll

PUSH UPS

temperaturetemperature

The measure of how hot or cold The measure of how hot or cold something issomething is

0F 0C

The temperature is 1020F.

The temperature is 380C.

3-dimensional 3-dimensional figurefigure

A solid figure that has length, width, A solid figure that has length, width, and heightand height

ton (T)ton (T)

A customary unit used to measure A customary unit used to measure weightweight

1T = 2,000 lb1T = 2,000 lb

trapezoidtrapezoid

A quadrilateral with exactly one pair A quadrilateral with exactly one pair of parallel sidesof parallel sides

triangular prismtriangular prism

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

faces are parallelogramsfaces are parallelograms

2-dimensional 2-dimensional figurefigure

A plane figure that has length A plane figure that has length and widthand width

Vertex/verticesVertex/vertices

The point where 2 rays meet, where The point where 2 rays meet, where two sides of a polygon meet, or where two sides of a polygon meet, or where the edges of a polyhedron meet; the the edges of a polyhedron meet; the

top point of a cone or pyramidtop point of a cone or pyramid

vertices vertices vertex

yardyard

A customary unit for measuring A customary unit for measuring length or distancelength or distance

3 feet = 1 yard3 feet = 1 yard36 inches = 1 yard36 inches = 1 yard