United States. War Department

“ The a of these expressions is like the n when the noun is inanimate: дайте мне ваши три рубля "give me your three rubles"; it is like the g when the noun is animate: вы встретили этих четырёх красивых дёвушек? "did you meet those four pretty young ladies?" However, when the numbers 2, 3, 4 are at the end of a longer number, the a is even with animates like the n: мы видели двадцать два мальчика "we saw 22 boys"; only a pronominal adjective before the number has the a like the g: мы видели ваших двадцать два ученика "we saw your 22 pupils." ”

“ The numbers пять "5," шесть "6," семь, "7," восемь "8," девять "9," десять "10," двадцать "20," тридцать "30" inflect like S nouns of the fourth declension, with stress on the endings; the е in восемь is an inserted vowel: g, d, l пяти, восьми, двадцати; i пятью, восьмью, двадцатью. In multiplication there are also i forms stressed on the stem: пятью "5 times," восемью (with inserted vowel) "8 times." ”