There are two numerical systems in the Japanese language.
The ichi, ni, san system and the hitotsu, futatsu, mittsu system.
The ichi-system is used with number counters. The hitotsu-system is used independently without number counters (ex. 1-en, 1-mai, 1-dai).
The hitotsu-system goes as far as 10 and cannot be use for people, time and money.
1 to 10
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10 to 10,000 (ichi-system only)
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Large Numbers
| 1 |  | いち |
| 10 |  | じゅう |
| 100 |  | ひゃく |
| 1,000 |  | せん |
| ----- | ||
| 10,000 |  | いちまん |
| 100,000 |  | じゅうまん |
| 1,000,000 |  | ひゃくまん |
| 10,000,000 |  | いっせんまん |
| ----- | ||
| 100,000,000 |  | いちおく |
| 1,000,000,000 |  | じゅうおく |
| 10,000,000,000 |  | ひゃくおく |
| 100,000,000,000 |  | いっせんおく |
| ----- | ||
| 1,000,000,000,000 |  | いっちょう |
| 10,000,000,000,000 |  | じゅっちょう |
| 100,000,000,000,000 |  | ひゃくちょう |
| 1,000,000,000,000,000 |  | せんちょう |
