# Lesson 8. English Numbers: The Complete Guide (Up to 10^100)

After learning numbers in Chinese, French, and Japanese, you will learn about English numbers today! In fact, English numbers are easy yet tricky. Let’s get started!

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**Cardinal Numbers vs Ordinal Numbers**

We use the **cardinal numbers** to **count**, while the **ordinal numbers** to **show** the **order, rank, position, or sequence. **Basically, we just need to add ‘th’ to the cardinal numbers to form ordinal numbers, except 1, 2, 3, 5, 8, 9, and 12.

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###### Level One: 1 to 10 – the basic numbers you must know!

Arabic |
Cardinal |
Ordinal |

0 | zero | zeroth |

1 | one | first |

2 | two | second |

3 | three | third |

4 | four | fourth |

5 | five | fifth |

6 | six | sixth |

7 | seven | seventh |

8 | eight | eighth |

9 | nine | ninth |

10 | ten | tenth |

###### Level Two: 11 to 19 – a bit irregular, but still understandable!

Arabic |
Cardinal |
Ordinal |

11 | eleven | eleventh |

12 | twelve | twelfth |

13 | thirteen | thirteenth |

14 | fourteen | fourteenth |

15 | fifteen | fifteenth |

16 | sixteen | sixteenth |

17 | seventeen | seventeenth |

18 | eighteen | eighteenth |

19 | nineteen | nineteenth |

###### Level Three: 20-99 – note the pattern.

Arabic |
Cardinal |
Ordinal |

20 | twenty | twentieth |

21 | twenty-one | twenty-first |

22 | twenty-two | twenty-second |

23 | twenty-three | twenty-third |

24 | twenty-four | twenty-fourth |

25 | twenty-five | twenty-fifth |

26 | twenty-six | twenty-sixth |

27 | twenty-seven | twenty-seventh |

28 | twenty-eight | twenty-eighth |

29 | twenty-nine | twenty-ninth |

30 | thirty | thirtieth |

40 | forty | fortieth |

50 | fifty | fiftieth |

60 | sixty | sixtieth |

70 | seventy | seventieth |

80 | eighty | eightieth |

90 | ninety | ninetieth |

91 | ninety-one | ninety-first |

98 | ninety-eight | ninety-eighth |

99 | ninety-nine | ninety-ninth |

Do you notice that you need to write down the hyphen (-) from 21 to 99?

###### Level IV: 100 – Under 1,000,000

Arabic |
Cardinal |
Ordinal |

100 | one hundred | hundredth |

200 | two hundred | two hundredth |

300 | three hundred | three hundredth |

1,000 | one thousand | thousandth |

4,000 | four thousand | four thousandth |

10,000 | ten thousand | ten thousandth |

50,000 | fifty thousand | fifty thousandth |

100,000 | one hundred thousand | hundred thousandth |

600,000 | six hundred thousand | six hundred thousand |

‘One’ can be substituted by ‘a’ from here. Thus:

one hundred = a hundred

one thousand = a thousand

In UK and US English numbers, we use comma (,) to separate every three digits.

###### Level V: 1,000,000 and Beyond

Arabic |
Cardinal |
Ordinal |

10^{6} |
one million | millionth |

10^{7} |
ten million | ten millionth |

10^{8} |
hundred million | hundred millionth |

10^{9} |
one billion | billionth |

10^{10} |
ten billion | ten billionth |

10^{12} |
one trillion | trillionth |

10^{15} |
one quadrillion | quadrillionth |

10^{18} |
one quintillion | quintillionth |

10^{21} |
one sextillion | sextillionth |

10^{24} |
one septillion | septillionth |

10^{27} |
one octillion | octillionth |

10^{30} |
one nonillion | nonillionth |

10^{33} |
one decillion | decillionth |

10^{36} |
one undecillion | undecillionth |

10^{39} |
one duodecillion | duodecillionth |

10^{42} |
one tredecillion | tredecillionth |

10^{45} |
one quattuordecillion | quattuordecillionth |

10^{48} |
one quindecillion | quindecillionth |

10^{51} |
one sexdecillion | sexdecillionth |

10^{54} |
one septendecillion | septendecillionth |

10^{57} |
one octodecillion | octodecillionth |

10^{60} |
one novemdecillion | novemdecillionth |

10^{63} |
one vigintillion | vigintillionth |

10^{100} |
one googol | googolth |

###### Level VI: ‘hundred and’ for UK English, while ‘hundred’ for US English

Arabic |
UK English |
US English |

101 | one hundred and one | one hundred one |

102 | one hundred and two | one hundred two |

110 | one hundred and ten | one hundred ten |

136 | one hundred and thirty-six | one hundred thirty-six |

288 | two hundred and eighty-eight | two hundred eighty-eight |

999 | nine hundred and ninety-nine | nine hundred ninety-nine |

1,010 | one thousand and ten | one thousand ten |

2,018 | two thousand and eighteen | two thousand eighteen |

3,996 | three thousand nine hundred and ninety-six | three thousand nine hundred ninety-six |

6,003 | six thousand and three | six thousand three |

12,345 | twelve thousand three hundred and forty-five | twelve thousand three hundred forty-five |

111,111 | one hundred and eleven thousand one hundred and eleven | one hundred eleven thousand one hundred eleven |

1,008,000 | one million eight thousand | one million eight thousand |

**The Incredible Zero**

Beside zero, there are several ways to describe the number ‘0’. For instances:

The letter ‘o’ are used to spell the number as in room numbers, years, bank accounts, and telephone numbers.

On the other hand, British often use ‘nought’ instead of ‘zero’.

**Below Zero**

For the numbers below zero – negative numbers, the numbers are preceded by the ‘minus’. Therefore:

-5 → minus five.

-20 → minus twenty.

** **

**Decimal Numbers**

We use ‘point’ to pronounce the decimal point (.)

After the decimal points, we read each digit of the number individually.

0.2 → zero point two.

0.05 → zero point zero five.

0.667 → zero point six six seven.

1.2385 → one point two three eight five.

**Fraction Numbers**

Structure: cardinal number for numerator + hyphen (-) + ordinal number for denominator.

1/4 → one fourth (also known as a quarter).

1/8 → one eighth.

For the plural numerators, we add ‘s’ on the ordinal numbers.

2/3 → two thirds.

3/4 → three fourths (also known as three quarters).

When the number ‘2’ is the denominator, we use ‘half’ (singular) or ‘halves’ (plural).

1/2 → one-half.

5/2 → five-halves.

If the number consisting of a whole number with a fraction number, we use ‘and’ between them.

2 3/4 → two and three-fourths.

8 39/100 → eight and thirty-nine-hundredths.

**Percentages**

We form the percentages by simply adding the ‘percent’ behind the numbers. Thus:

10% → ten percent.

25% → twenty-five percent.

49.75% → forty-nine point seven five percent.

100% → one hundred percent.

**Grand or K**

We can shorten the ‘thousand’ into ‘grand’ or ‘K’. Note that this rule applies for the number with exact on the thousands. For examples:

8,000 → eight grand or eight K.

20,000 → twenty grand or twenty K.

9,900 → nine grand nine hundred or nine K nine hundred.

**Years**

For saying years in English, divide the years into two digits-two digits. Therefore:

1996 → nineteen ninety-six.

2018 → twenty eighteen.

2036 → twenty thirty-six.

However, for years from 2000 to 2009, we need to say the full number.

2000 → two thousand.

2002 → two thousand and two.

2009 → two thousand and nine.

**Quiz Time**

Cool! Let’s do these exercices to ensure you fully understand to English numbers!

- 369
- 2,468
- -100
- 0.125
- 3 5/8

**Answers:**

- Three hundred and sixty-nine (UK) or three hundred sixty-nine (US).
- Two thousand four hundred and sixty-eight (UK) or two thousand four hundred sixty-eight (US).
- Minus one hundred.
- Zero point one two five.
- Three and five-eighths.

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