Numerals are rather difficult words in terms of grammar. We will look at examples of their spelling and pronunciation, based on the most common difficulties.
Spelling of some numbers
Complex numerals consisting of two bases are written together, for example: fifty, six hundred, nine hundred, etc.
The spelling of numerals zero and zero is oriented in oblique cases to the second form (equal to zero, rests on zero). And set expressions use both forms of the numeral (“I am to him: zero attention” or “He is absolute zero”).
Ordinal numbers, having in their composition part: -millionth, -billionth, -thousandth, are written together. Example: 100,000th passenger,
half a million fortune, two hundred and twenty five thousandth reader.
Negative particle not with numerals is written separately (not_ one, not_ eighteen years old, not_ third class).
Declination of numerals
The spelling of the numbers ninety and one hundred varies. They have "o" in the end of the nominative and accusative cases, and when declined, this ending changes to "a",for example: ninety percent completed, ninety rubles missing. But the numeral forty does not have an ending in the nominative and accusative cases, and when declining, it has the ending "a", for example: there were not even forty people.
The nominative and accusative cases of the numeral two hundred have the ending "and", and three hundred and four hundred have the ending "a".
The spelling of the numerals one and a half (one and a half for women) and one and a half hundred retains this form in the accusative case, and in other cases they decline in the same way: one and a half and one and a half hundred, regardless of gender.
Just like a noun with a stem ending in -a, which is feminine, the numeral thousand is inflected, and a million and a billion are masculine nouns whose stem ends in a consonant.
The numeral both (m.s. and s.r.), as well as both (f.s.) have a different type of declension. The masculine and neuter genders have the basis of the declension obo - For example: both, both, etc. And for the feminine, the basis is both- (both, both).
Declination of compound ordinal and cardinal numbers
The spelling of numerals also implies that when declining compound ordinal numbers, only the ending of the last word of a given part of speech changes. For example: seven hundred and eighty three - seven hundred and eighty third - seven hundred and eighty third - about seven hundred and eighty third.
But in compound cardinal numbers, each word included in its composition is declined. For example: three hundred thirty-five - three hundred thirty-five - three hundred thirtyfive.
Fractional numbers are also declined in both parts: two thirds - two thirds - two thirds - about two thirds.
Please note that when naming fractions, you should pronounce it like this: three fourths, not three fourths, four integers, not four integers!
Declination of compound numbers
For complex numbers ranging from 50 to 90, as well as 200–900, each part that makes up these words changes during declination:
I. sixty, three hundred, five hundred.
R. sixty, three hundred, five hundred.
D. sixty, three hundred, five hundred.
B. sixty, three hundred, five hundred.
T. sixty, three hundred, five hundred.
P. about sixty, about three hundred, about five hundred.
As you can see, the spelling of the names of numerals directly depends on their digit and the designated number.
