Estas varme en la domo, it is warm in the house.
Estos malvarme morgaux, it will be cold tomorrow.
Estas bone ke li venis, it is well that he came.
Estas amuze ke ni forgesis lin, it is amusing that we forgot him.
Ke vi venis estis tre sagxe, that you came was very wise.
Estos pli agrable en la salono, it will be pleasanter in the parlor.


FORMATION OF CARDINAL NUMERALS.

142. The cardinal numerals for the tens, hundreds and thousands are
formed by prefixing "du", "tri", "kvar", etc., to "dek", ten, "cent",
hundred, and "mil", thousand, respectively.

Tens.
---------------------------------------------
dudek, twenty. sesdek, sixty.
tridek, thirty. sepdek, seventy.
kvardek, forty. okdek, eighty.
kvindek, fifty. nauxdek, ninety.

Hundreds. Thousands.
---------------------------- -------------------------
ducent, two hundred. trimil, three thousand.
kvincent, five hundred. kvarmil, four thousand.
sepcent, seven hundred, etc. sesmil, six thousand, etc.

143. The cardinals between ten and twenty, twenty and thirty, etc., are
formed by placing "unu, du, tri", etc., after "dek, dudek, tridek", etc.
(Cf. "dek unu", eleven, "dek du", twelve, 136):