### Numbers in English

A number is a word (such as ‘five’) or symbol (such as ‘3’) that represents an amount of quantity. We use numbers for counting or calculating.
• Even numbers (= 2, 4, 6, 8, etc.)
• Odd numbers (= 1, 3, 5, 7, etc.)

#### Whole number

a number (such as 0, 1, 5, 8) without fractions or decimals

#### Round number

a number that often ends in 0 or 5

### Cardinal numbers

Numbers (such as 1, 2, 3) that indicate quantity are called cardinal numbers.
• I have five books.

### Ordinal numbers

Numbers (such as first, second, third) that are used to put things in an order are called ordinal numbers.
• This is the fifty-sixth floor.

 1st     first 60th      sixtieth 2nd    second 61st       sixty-first 3rd     third 62nd      sixty-second 4th     fourth 63rd       sixty-third 5th     fifth 100th     hundredth 6th     sixth 1000th   thousandth

#### Nominal numbers

Numbers (such as zip code or a player on a team) used in labeling or identifying something are called nominal numbers.

#### The number 0

0 is called zero (British English also nouht). The  letter o means zero in years, telephone numbers, room numbers, bus numbers and times. (My number is five o double six =My number is 5066). Nil means the number 0 as the score in games (The score was three nil=The score was 3-0.).

### Fraction

A division of a whole number is called fraction.

 1/2    a half 4/16    four sixteenths 1/3    a/one third 6/32    six thirty-seconds 1/4    a/one quarter 11/2    one and a half 3/4   three quarters 22/3    two and two thirds 1/5   a fifth

### Decimal fraction

Decimal fraction or decimal is fraction that is written with a point (.). We say all the digits after a decimal point separately. Money is said like normal numbers.

 0.5       point five 0.35     point three five 0.05     point zero five 0.529   point five two nine 2.5        two point five \$26.95  twenty-six ninety-five