Common Core Math Vocabulary

# Number - Definition with Examples

## Let's learn!

**What is a number?**

In mathematics, a number can be defined as a measurement, count or a value. We use numbers to count different quantities, quantify measurements and for making calculations.

All numbers are represented by numerals. All numbers also have a number name in words in English. We write and talk about numbers using numerals such as 4, 16, 37 and number names such as ‘four’, ‘sixteen’ and ‘thirty-seven’.

A number can be referred to in different ways. Here are the numerals, number names and quantities representing the first few numbers.

‘No.’ or ‘no.’ is an abbreviation of number. Numbers (plural) is abbreviated as ‘Nos.’ or ‘nos.’

**Different Types of Numbers:**

Numbers can be of different types. These types of numbers can also be considered as the synonyms of numbers.

**Natural Numbers:**

Natural numbers include numbers from 1 onwards.

**Whole Numbers:**

Whole numbers include numbers from 0 onwards.

Whole number can be even or odd and prime or composite.

**Cardinal Numbers:**

Cardinal Numbers tell us the count of things or items and include all counting numbers from 1 onwards.

**Ordinal Numbers:**

Ordinal numbers tell us the order or the position of things or items.

**Fraction Numbers:**

Fraction numbers tell us the number of parts of a whole. A fraction consists of a numerator and a denominator.

**Decimal Numbers:**

Decimal number consist of two parts – whole number part and a decimal part, separated by a decimal point.

**Integer Numbers:**

Integer numbers include the counting numbers (1, 2, 3, 4, …..) , zero (0) and the negative of the counting numbers (-1, -2, -3, -4, …..).

## Let's sing!

*One for the sun shining in the sky.*

*Two for the little birds that fly by.*

*Three for the tiny seashells in the sand.*

*Four for the sticks I hold in my hand.*

*Five for the petals of the flower I see.*

*Six for the bees as busy as can be.*

*Seven for the colors in the rainbow.*

*Eight for the snails crawling so slow.*

*Nine for the squirrels climbing up the tree.*

*Ten for the little puppies on a running spree.*

## Let's do it!

Instead of handing out math number worksheets to your children, ask them to observe numbers in different forms around them. Here are a few instances – Ask them at what position are you standing in the queue at a store, how many items did you buy in all and if the bill amount is a whole number or a decimal number. You can also ask them to count the number of pages in a children’s book.

Further you can tell them about nominal numbers, that is, the numbers that are used only as name or to identify something. For instance, the zip code of an area (12345), telephone numbers (1248-6749-350), the number on the jersey of a soccer player (05).

## Related math vocabulary

Numeral, Number Name, Whole Number, Even number, Odd Number, Prime Number, Composite Number, Fraction, Decimal

The Complete K-5 Math Learning Program Built for Your Child