English numerals |
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English number words include
0 | 10 | ||||
1 | 11 | ||||
2 | 12 | 20 | |||
3 | 13 | 30 | |||
4 | 14 | 40 | |||
5 | 15 | 50 | |||
6 | 16 | 60 | |||
7 | 17 | 70 | |||
8 | 18 | 80 | |||
9 | 19 | 90 |
If a number is in the range 21 to 99, and the second digit is not zero, the number is typically written as two words separated by a
21 | |
25 | |
32 | |
58 | |
64 | |
79 | |
83 | |
99 |
In English, the
100 | |
200 | |
… | … |
900 |
So too are the thousands, with the number of thousands followed by the word "thousand".
1,000 | |
2,000 | |
… | … |
10,000 | |
11,000 | eleven thousand |
… | … |
20,000 | twenty thousand |
21,000 | twenty-one thousand |
30,000 | thirty thousand |
85,000 | eighty-five thousand |
100,000 | |
999,000 | nine hundred and ninety-nine thousand (inclusively British English, Irish English, Australian English, and New Zealand English) nine hundred ninety-nine thousand (American English) |
1,000,000 | |
10,000,000 | ten million or |
In American usage, four-digit numbers are often named using multiples of "hundred" and combined with tens and ones: "eleven hundred three", "twelve hundred twenty-five", "four thousand forty-two", or "ninety-nine hundred ninety-nine." In British usage, this style is common for multiples of 100 between 1,000 and 2,000 (e.g. 1,500 as "fifteen hundred") but not for higher numbers.
Americans may pronounce four-digit numbers with non-zero tens and ones as pairs of two-digit numbers without saying "hundred" and inserting "oh" for zero tens: "twenty-six fifty-nine" or "forty-one oh five". This usage probably evolved from the distinctive usage for years; "nineteen-eighty-one", or from four-digit numbers used in the American telephone numbering system which were originally two letters followed by a number followed by a four-digit number, later by a three-digit number followed by the four-digit number. It is avoided for numbers less than 2500 if the context may mean confusion with time of day: "ten ten" or "twelve oh four".
Intermediate numbers are read differently depending on their use. Their typical naming occurs when the numbers are used for counting. Another way is for when they are used as labels. The second column method is used much more often in
Common British vernacular | Common American vernacular | Common British vernacular | |
"How many marbles do you have?" | "What is your house number?" | "Which bus goes to the High Street?" | |
101 | "A hundred and one." | "One-oh-one." Here, "oh" is used for the digit zero. |
"One-oh-one." |
109 | "A hundred and nine." | "One-oh-nine." | "One-oh-nine." |
110 | "A hundred and ten." | "One-ten." | "One-one-oh." |
117 | "A hundred and seventeen." | "One-seventeen." | "One-one-seven." |
120 | "A hundred and twenty." | "One-twenty." | "One-two-oh", "One-two-zero." |
152 | "A hundred and fifty-two." | "One-fifty-two." | "One-five-two." |
208 | "Two hundred and eight." | "Two-oh-eight." | "Two-oh-eight." |
394 | "Three hundred and ninety-four." | "Three-ninety-four." | "Three-ninety-four." or "Three-nine-four." |
Note: When a
In
For numbers above a million, three main systems name numbers in English (for the use of prefixes such as kilo- for a thousand, mega- for a million, milli- for a thousandth, etc. see
Many people have no direct experience of manipulating numbers this large, and many non-American readers may interpret billion as 10^{12} (even if they are young enough to have been taught otherwise at school); moreover, usage of the "long" billion is standard in some non-English speaking countries. For these reasons, defining the word may be advisable when writing for the public.
Number notation | Power notation |
Short scale | Long scale | Indian (or South Asian) English |
---|---|---|---|---|
1,000,000 | 10^{6} | one |
one million | ten lakh |
1,000,000,000 | 10^{9} | one a thousand million |
one a thousand million |
one hundred crore (one |
1,000,000,000,000 | 10^{12} | one a thousand billion |
one a million million |
one lakh crore (ten |
1,000,000,000,000,000 | 10^{15} | one a thousand trillion |
one a thousand billion |
ten crore crore (one |
1,000,000,000,000,000,000 | 10^{18} | one a thousand quadrillion |
one a million billion |
ten thousand crore crore (ten |
1,000,000,000,000,000,000,000 | 10^{21} | one a thousand quintillion |
one a thousand trillion |
one crore crore crore |
The numbers past one trillion in the short scale system, in ascending powers of 1000, are as follows: quadrillion, quintillion, sextillion, septillion, octillion, nonillion, decillion, undecillion, duodecillion, tredecillion, quattuordecillion, quindecillion, sexdecillion, septendecillion, octodecillion, novemdecillion and vigintillion (which is 10 to the 63rd power, or a one followed by 63 zeros). The highest number in this series listed in modern dictionaries is centillion, which is 10 to the 303rd power.^{[1]} The interim powers of one thousand between vigintillion and centillion do not have standardized names, nor do any higher powers, but there are many ad hoc extensions in use. The highest number listed in Robert Munafo's table of such unofficial names^{[2]} is milli-millillion, which was coined as a name for 10 to the 3,000,003rd power.
The
The terms arab, kharab, padm and shankh are more commonly found in old books on Indian mathematics.
Here are some approximate composite large numbers in American English:
Quantity | Written | Pronounced |
---|---|---|
1,200,000 | 1.2 |
one point two million |
3,000,000 | 3 million | three million |
250,000,000 | 250 million | two hundred fifty million |
6,400,000,000 | 6.4 billion | six point four billion |
23,380,000,000 | 23.38 billion | twenty-three point three eight billion |
Often, large numbers are written with (preferably
In some areas, a