Number Sense

Front 1

odd numbers

Back 1

A number that always has one left over

when you put that number into pairs.
They end in 1, 3, 5, 7, or 9.

Front 2

even numbers

Back 2

Numbers you name when you skip count

by two. They are numbers you can form

by making pairs.
They end with 0, 2, 4, 6, or 8.

Front 3

standard form

Back 3

A number written with one

digit for each place value.

Front 4

word form

Back 4

The value of a number written

in words.

Front 5

short word form

Back 5

The value of a number written using a

combination of digits and words.

Front 6

expanded form

Back 6

A way to write numbers

that shows the value

of each digit.

Front 7

expanded notation

Back 7

A way to write numbers

that shows each digit

times the corresponding

place value.

Front 8

periods

Back 8

The groups of three place

values on the number chart. Commas are used

to separate periods when

writing large numbers.

Front 9

ordinal number

Back 9

A number used to tell you

the position of people or

things in order - first, second, third, etc.

Front 10

integers

Back 10

The set of whole numbers

and their opposites.
{...-3, -2, -1, 0, 1, 2, 3, ...}