Thread: Numbers after prepositions (Time is included)

Originally Posted by Antonio1986

One of the most challenging part for Russian learners is to use correctly numbers after prepositions

This is a challenging thing not only for Russian learners but for native Russians too

The declination of numerals in Russian is very complicated. It has undergone many changes during the history of the language, and it obviously continues to change now, because almost nobody declines numerals in conversational speech the way they should be declined in the normative language. There is a total disorder there.

Originally Posted by Antonio1986

1. Warren Buffets wealth is counted (=estimated) from 60 to 70 billion - Состояние Баффета измеряется от шестидесяти до семидесяти миллиардов (so in integrated double-component numbers decline both components. Correct?)

Numerals are correct.
But it would be better to place a noun in instrumental case between the word ‘измеряется’ and the ‘от’—‘до’ construction, e.g:
Состояние Баффета измеряется суммой от шестидесяти до семидесяти миллиардов

Originally Posted by Antonio1986

2. Bill Gates wealted is counted (=estimated) from 63 to 75 billion - Состояние Гейта измеряется от шестидесяти трех до семидесяти пяти миллиардов (In coumpound numbers every component declines)

Correct. The same thing.

Originally Posted by Antonio1986

3. Second World War lasted from 1938 until 2 September 1945: Вторая Мировая война длилась с тысяча девятьсот тридцадь восьмого до второго девятого тысяча девятьсот сорок пятого.

Correct.
But the month is pronounced by its number mostly in cases where is is written with a number (e.g. in formal documents). This sounds strange a bit in a sentence like that. So you’d better use the name of the month: ‘второго сентября тысяча девятьсот сорок пятого’.

Originally Posted by Antonio1986

4. I will be at office from 10:30 to 12:00 = я буду в офисе с половины одиннадцатого до двенадцати часов.

Correct.

Originally Posted by Antonio1986

5. The movie will last from 15:57 to 17:13 = I don't know ...

Фильм будет идти с пятнадцати пятидесяти семи до семнадцати тринадцати.