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- How do you spell the number 1 in Italian? In Italian all numbers have only one correct way of spelling, there are no variations. In dictionaries, the preferred spelling is listed first among the headwords of an entry.
- The correct spelling of 1 in Italian words is:
**uno**

Most people are aware of how to spell singular numbers. Problems often arise when trying to spell bigger numbers such as 1. If a number is in the range 21 to 99, and the second digit is not zero, one typically writes the number as two words separated by a hyphen. In English, the hundreds are perfectly regular, except that the word hundred remains in its singular form regardless of the number preceding it. So too are the thousands, with the number of thousands followed by the word thousand.

- Is 1 A Prime Number?
- Prime Factors Of 1
- Is 1 A Composite Number?
- Prime Factorization Of 1
- Is 1 An Odd Number?
- Is 1 An Even Number?
- Square Root Of 1?
- Multiples Of 1?