# NUMBERS

## 1. The numbers in English

### 1.1. Cardinal numbers

Cardinal numbers say how many people or things there are.

Examples:

• There are five books on the desk.
• Ron is ten years old.

#### 1.1.1. Numbers bigger than 20

Use a hyphen between compound numbers.

#### 1.1.2. Numbers bigger than 100

Use a hyphen between compound numbers and the word and.

Use either the definite article a or one for 100.

#### 1.1.3.Numbers bigger than 1,000

Use a hyphen between compound numbers and the word and.

Use either the definite article a or one for 1,000.

Separate three digits with a comma (,) → 50,000.

#### 1.1.4. The number 0

There are different words for the number 0.

* In American English zero is used.

### 1.2. Ordinal numbers

Add th to the cardinal number to form the ordinal number: six → sixth

Add the last two letters of the written word to the figure. → 4th

Numbers in words: The ordinal numbers 1st → first, 2nd → second and 3rd → third are irregular. Be careful with the spelling of the words for 5th, 8th, 9th, 12th and the words ending in -y.

### 1.3. Fractions and decimals

#### 1.3.1. Fractions

Use the ordinal number for the denominator:

• 1/3 → one third
• 2 3/5 → two and three fifths

Exceptions:

• 1/2 → one half
• 1/4 → one quarter

#### 1.3.2. Decimals

Use the cardinal number for decimals:

• 3.8 → three point eight
• 4.25 → four point two five

### 1.4. Roman numbers

Roman numbers are seldom used. They are used for the names of kings and queens. Use the ordinal number:

• Elisabeth II → Elisabeth the Second
• Louis XIV → Louis the Fourteenth

## 2. The numbers in a table 