!

additionTo combine and put together two or

more quantities.

analog clocka clock that shows the time by the positions the hour and minute hand.

addendany one of the two or more

numbers being added.

alikewhen two or more items have similar characteristics. Including same size,

quantity, or amount.

4 + 6 + 3 = 10

addends 3 + 3 = 6

+ =

characteristic of an object. includes color, shape, sides, size, weight etc.

a graph that uses rectangular bars to show and compare how large each quantity is.

bar modelmodel that uses bars to represent

known and unknown quantities

attribute bar graph

circlea closed shape with no vertices or sides

6 + 4 = 10

106?

• green • triangle • 4 equal sides • 4 90º angles

!

!

to distinguish wether one quantity is larger, smaller or equal to the other number.

a point where the edges of a figure meet

count backa method used for subtraction

compare

corner

units of money that represent parts of a dollar

coins

corner

!

!

!

the bottom number of a fraction that represents the number of parts the whole is divided into.

differencethe result when one number is subtracted from another.

digital clocka clock that uses digits only to show time.

dataa collection of information.

denominator

1 2

5 - 4 = 1

denominator

!

!

!

the side of a polygon or line where two solid figures meet.

quantities that have the same amount.

equation

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

fact familya group of related facts that use the same numbers (also known as related facts).

edge equal

=

1 + 4 = 3 + 2

edge

!

!

!

!

!

the smaller amount or quantity. fractions represent equal parts of a whole.

greater thangreater than is used to compare

two numbers when the first number is larger than the second

number.

half ofone of 2 equal parts.

fewer fraction

2 > 1

!

!

!

!

!

a geometric line that runs from right to left across the page.

the point where two lines cross over.

lengthhow long something is. the distance from one place to another.

morethe greater quantity or amount.

horizontal intersect

intersection

this has more!

!

!

!

!

a line diagram that represents numbers as points on a line.

a symbol used to represent a number.

numeratorthe number above the line of a fraction, showing number or parts of the whole,

objecta material thing that can be seen and

touched.

numeralnumber line

1 I 2 II 3 III 4 IV 5 V

6 VI 7 VII 8 VIII 9 VIIII 10 X

numerator

!

a single unit or object. two lines on a plane that never meet.

place valuea graph that uses symbols to show data.

parallel

the value of a digit because of its place in the number.

ones

picture graph

6 ones

1 3

!

!

!

!

one of the line segments that makes a flat, two-dimensional shape. a shape that is not flat; an object that

has three dimensions (height, length, width).

sortto organize groups according to shared

characteristics.

subtractto take away, remove, or compare quantities.

side solid shapes

one side

5 - 2 = 3

!

!

!

!

!

!

My First Math

Dictionary

By: Michelle Grant

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!