The numbers zero to nine in Lojban:

- 0=
*no* - 1=
*pa* - 2=
*re* - 3=
*ci* - 4=
*vo* - 5=
*mu* - 6=
*xa* - 7=
*ze* - 8=
*bi* - 9=
*so*

The hexadecimal numbers from A to F:

- A=
*dau* - B=
*fei* - C=
*gai* - D=
*jau* - E=
*rei* - F=
*vai*

Numbers 10 to 999 are constructed by combining these digits without spaces: *pano* is 10, *vore* is 42, *binoso* is 809, and so on.

Numbers 1000 onward may have a comma or period in them. This too is represented in Lojban, as *ki'o*, which is used with spaces. Thus 7530 may be *ze ki'o mucino* instead of *zemucino*.

When there is a three-zero sequence (000) after the comma, *ki'o* may be used to represent it preceded by the comma. Thus 1000 may be *pa ki'o* intead of *panonono*. This is also used to construct larger sequences, such as *ki'o ki'o* (million) *ki'o ki'o ki'o* (billion) and so on.

Decimals are handled with *pi*, which is quite simply a decimal point in the form of a word. *cipivo* is 3.4, *sopixa* is 9.6, etc.

*pi*is actually a unit point. Therefore, if one is working with the hexadecimal system when*pi*is used, it is a**hexa**decimal point.

The constant Pi (about: 3.14159), is expressed in Lojban as *pai*.

To use numbers as *sumti*, the article *li* is used. So *li muvozeci* is "the number 5473." To say more than one number without them combining to one number, insert *li* before each one. *so bi ze* is 987, whereas *li so li bi li ze* is "nine, eight, seven."