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Used for counting, stating costs, hours, years and in equations. Cardinal numbers answer the following questions: wie viel? (how much?) and wie viele? (how many?).
Millions, billions, and numerals in noun form are capitalized. Besides that, they are always feminine.
The numbers from 1 to 12 are irregular and have to be learned by heart: eins, zwei, drei, vier, fünf, sechs, acht, neun, zehn, elf, zwölf.
The numbers 13 to 19 are formed by combining the number from 3 to 9 with the number 10 (zehn). The exception is the number 7 (in which case we drop the -en ending from sieben).
The numbers 20, 30 (exception: dreißig dreizig), 40, 50, 60, 70 (exception: siebzig siebenzig), 80, 90 are formed by combining the number ten with the suffix -zig.
We create the numbers 21-29, 31-39, 41-49, ..., 91-99 starting from the number of ones, which we then combine using the word und with the number of tens, e.g. einundzwanzig.
In the case of hundreds and units, we may or may not combine the number of hundreds with the number of tens using the word und.
For hundreds and thousands, the word ein can be omitted if it is at the beginning of the numeral.
When writing in words, a number that consists of hundreds, thousands, millions and has 1 as the number of units , e.g. 101, 501, 2001, 1 000 001 we put an eins at the end.
When the numeral ein precedes a noun, it is inflected like an indefinite article.
| Nominativ | Genitiv | Dativ | Akkusativ | |
|---|---|---|---|---|
| Maskulinum | ein Mann | eines Mannes | einem Mann | einen Mann |
| Femininum | eine Frau | einer Frau | einer Frau | eine Frau |
| Neutrum | ein Kind | eines Kindes | einem Kind | ein Kind |
| # | Numeral |
|---|---|
| 1 | eins |
| 2 | zwei |
| 3 | drei |
| 4 | vier |
| 5 | fünf |
| 6 | sechs |
| 7 | sieben |
| 8 | acht |
| 9 | neun |
| 10 | zehn |
| 11 | elf |
| 12 | zwölf |
| 13 | dreizehn |
| 14 | vierzehn |
| 15 | fünfzehn |
| 16 | sechzehn |
| 17 | siebzehn |
| 18 | achtzehn |
| 19 | neunzehn |
| 20 | zwanzig |
| 21 | einundzwanzig |
| 22 | zweiundzwanzig |
| 30 | dreißig |
| 40 | vierzig |
| 50 | fünfzig |
| 60 | sechzig |
| 70 | siebzig |
| 80 | achtzig |
| 90 | neunzig |
| 100 | (ein)hundert |
| 101 | (ein)hundert(und)eins |
| 201 | zweihundert(und)eins |
| 500 | fünfhundert |
| 1000 | (ein)tausend |
| 1001 | (ein)tausend(und)eins |
| 2000 | zweitausend |
| 1 000 000 | eine Million |
| 1 500 000 | eine Million fünfhunderttausend |
| 1 000 000 000 | eine Milliarde |
| 1 000 000 000 000 | eine Billion |
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The years up to 1999 are expressed in hundreds, and the years from 2000 are expressed as cardinal numbers.