Dasha decided to invite guests to her birthday and sat down to write invitations by hand. She spoiled the very first card. At the top, she wrote in large print, "September first," and below, in the main phrase, she wrote the same thing, "I'm waiting for you on September first," and stopped. Something about this line sounded wrong, even though the same word was written both times. Her mother peeked over her shoulder and said that the invitation needed "the first" (referring to the date). Dasha asked why "September first" was okay at the top but not at the bottom.
This question is much more serious than it seems, and adults searching for "ordinal numbers Russian" or "Russian ordinal numerals" arrive at exactly the same place. The words "first," "second," and "third" seem simple until you need to use them in a real sentence. Then, the whole story of Dasha's birthday, from the ruined card to the blown-out candles, will clarify where these words come from, why they change their endings, and what trick is hidden in dates.
A spoiled postcard and two forms of the same word
The difference Dasha noticed is always present in the language; it's just that in spoken speech, people overlook it without thinking. When we name the day itself, the number is in its base form, neuter gender, because the word "number" is implied. Today is the first of September. What is the date today? The second of January. Here, "number" acts as a heading for the day, like an inscription on a calendar page. In the same form, the day appears on the school blackboard, at the top of a notebook, or on the cover of a festive program. Wherever the date stands by itself and is not tied to anything else, this base neuter form is used.
It's worth noting that something happens on this day, the form changes. I'll be waiting for you on September first. I was born on September first. The holidays began on May twenty-fifth. The number goes into the genitive case and now answers the question "when," and the question "what number" no longer applies to it. The name of the month, however, remains immutable and always stays in the genitive case, "of September" or "of January," no matter what form the number itself takes. Dasha corrected the card and grasped the rule before she heard its formulation, which is typical for one's native language. It's worth noting that English provides no hint here. In English, the date remains in the same form; only the prepositions around it change, and therefore the habit of choosing between two endings does not develop on its own in a child.
| What are we saying | Number form | Example |
|---|---|---|
| What day is it? (What date?) | nominative, neuter | Today is September first |
| We're talking about when something happened (when?) | Genitive case | I'll be waiting for you on September 1st. |
| Month name | always genitive case | September, January, May |
| Year | Only the last word changes | in nineteen forty-five |
Why are these words behaving like adjectives
While Dasha was rewriting the invitations, it's worth figuring out what we're dealing with. In Russian, numerals are divided into two dissimilar families. One answers the question "how many" and simply counts items like one, two, or ten. The other answers the question "which one in order" and puts things in their places, giving the first, second, third, tenth.
The second family is more comfortable than the first because it behaves like common adjective. The word "первый" declines just like "новый" or "большой," and in the same way, it acquires Feminine and neuter gender. The first guest, the first candle, the first place. The word obediently repeats the gender of the noun it attaches to, and in the plural, it becomes common to all. The first guests, the second gate, the third desks. A child who hears Russian spoken at home usually uses this ending without thinking and says "the first candle" without hesitation. Difficulties arise where intuition fails, in oblique cases and in dates. Sometimes it is said that the difference from cardinal numbers is precisely in gender, but this is inaccurate, because the word "one" also changes by gender and gives the forms "odin," "odna," "odno." The real difference lies elsewhere. Ordinal numbers change entirely according to the pattern of adjectives, with all cases and numbers, while cardinal numbers decline according to their own, rather peculiar rules. English, incidentally, recognizes the same distinction, transforming "one," "two," "three" into "first," "second," "third," only there the matter is limited to changing the ending, while Russian turns a number into a full-fledged adjective.
Guests arrive one by one
By four o'clock, the invited guests began to gather, and the order of their arrival naturally formed the necessary sequence. Timur arrived first, followed by Leva, and then their neighbor Anya arrived as the third. Next came the fourth, fifth, and sixth guests, and this is where a pattern can be heard, one worth pausing for.
The first three words in this sequence are unlike anything else and are not derived from counting. The first is not formed from "one," the second doesn't resemble "two," and the third only vaguely echoes "three." They will have to be memorized, which is fortunate because they are the words most frequently used in speech. Beyond that, however, the language becomes predictable. In the fourth, you can clearly hear "four"; in the fifth, "five"; in the sixth, "six"; and only an adjective ending is added to them. The same pattern applies to the tenth, hundredth, and thousandth, and if you go higher, to the fortieth and two-hundredth. A child only needs to hear this pattern once, and long numerals cease to seem like individual words that need to be learned one by one. It works in reverse as well. Upon hearing an unfamiliar ordinal word, a child almost always guesses which number it is derived from, and this intuition is more reliable than any memorized list.
The third deserves a special mention. It is the only one of the first three that declines according to the soft declension pattern and yields the forms "третьего," "третьему," "о третьем," while the first and second follow the hard declension and sound different. Because of this peculiarity.
In the middle of the evening, they started a game where they had to guess words in turns, and the ordinal numbers came out on their own. Who goes first, who goes second, whose turn is the third, who got the fourth round. None of the children thought about the endings, because in a live game, form comes faster than any rule. This is exactly how ordinal numbers settle in your head when they are pronounced dozens of times in a row for a specific reason.
| Number | masculine | Feminine | Middle genus |
|---|---|---|---|
| 1 | first | first | first |
| 2 | second | second | second |
| 3 | Third | third | third |
| 4 | fourth | fourth | fourth |
| 5 | fifth | fifth | fifth |
| 6 | sixth | sixth | sixth |
| 7 | seventh | seventh | seventh |
| 8 | eighth | eighth | eighth |
| 9 | ninth | ninth | ninth |
| 10 | Tenth | Tenth | Tenth |
| 20 | twentieth | twentieth | Twentieth |
| 30 | thirtieth | thirtieth | thirtieth |
| 40 | fortieth | fortieth | fortieth |
| 100 | hundredth | hundredth | hundredth |
| 1000 | thousandth | thousandth | thousandth |
Gifts, candles, and cases
The evening then laid out its orderlies in all cases, Without explaining anything. Timur lived on the fifth floor and walked up, Lev spent the whole evening remembering second place in a recent race, Anya gave a book with a bookmark on the third page, and the cake was brought out around seven o'clock. Fifth, second, third, seventh dutifully took their correct cases, and their endings turned out to be exactly the same as those of the words "new," "blue," "big." Another scattering of these words appeared in conversations about time and addresses, which are indispensable at any gathering. Anya lives in the twelfth apartment, the bus home runs on the third route, and they decided to leave around nine o'clock. Here, ordinal numbers function in exactly the same way, answering the question "which," and the same logic determines their case as for all adjectives around them. There is no need to learn a separate declension for ordinal numbers; they all follow the pattern of adjectives.
One detail is worth noting because it's precisely where people stumble with long numbers. When a numeral consists of several words, only the last one changes, while everything before it remains static. The grandmother in the video call recalled that she was born in nineteen forty-five, and in this long chain, only the last word, "fifth," changed to "fifthly." "Thousand," "nine hundred," and "forty" remained unaltered. The same happens when talking about the age of a house, a school number, or a book series where the numeral stretches across several words. Dates are also structured this way, where only the last word changes, "twenty-seventh" or "thirty-first." Once you grasp this detail, long years cease to be intimidating because you only need to work with one word; all others stay put. This rule helps even in the longest cases. A year like "two thousand twenty-sixth" is pronounced with only the word "sixth" changing, while the preceding chain sounds the same as it would independently.
| Case | Solid sample | Soft sample | Example |
|---|---|---|---|
| Nominative | fifth | Third | fifth floor, third guest |
| Genitive | fifth | third | to the fifth floor, September third |
| Dative | fifth | third | by the fifth lesson, at three o'clock |
| Accusative | fifth / of the fifth | third / of the third | to the fifth floor, calling the third guest |
| Instrumental | fifth | third | fifth in line, third route |
| Prepositional | about the fifth | about the third | on the fifth floor, about third place |
Three caveats that can be heard immediately
During the evening, three typical mistakes were made, each recognizable immediately. The first was made by the birthday girl herself on a card, taking the nominative form instead of the genitive and writing "I am waiting for you the first of September." It can be checked by asking yourself one question: am I naming the day, or am I saying when something will happen? If it's "when," the genitive case is needed. This mistake is so common that it appears in written congratulations and in photo captions, and every time the reason is the same. People use the form that first comes to mind.
The second one occurred when someone tried to decline the entire long year and said "in nineteen hundred and forty-fifth." The same rule of the last word helps here; only it needs to be changed. The third one was for the much-suffering "third," which was given a hard ending modeled after the first and second. All three are recognized the same way. It's worth remembering for a second that we have an adjective, which must agree with its noun.
Handwritten postcard
The invitation story is illustrative in that: In conversation, a child quickly skips over the date and doesn't have time to choose the correct form, but on paper, they have to stop and decide. Parents most often find out about the gap precisely in such moments, when the question arises: is it "first of September" or "on the first of September"?.
There's nothing to worry about here; quite the opposite, in fact. The fact that the question has been asked means the child is already hearing that there are two forms and is looking for the difference between them. Regularity is needed after that, because dates are learned in small portions in language. There are enough opportunities every day to say the correct form out loud. Birthdays, holidays, vacations, club schedules. Each such occasion is worth one learned rule. Any such conversation becomes practice, and there's no need to arrange it specifically. Questions about weekend plans, when grandma is arriving, the weekly schedule. At Palme School, children aged four to seventeen study Russian online with teachers, and such nuances are practiced precisely in live conversation. You can get acquainted with the school through two free lessons: an introductory session with a methodologist who will assess your child's level, and a trial lesson in a small group with a teacher.
Calendar as the Main Trainer
The candles were blown out, the guests left, and photos from the celebration flew to grandma in another country. The convenience of ordinal numbers is that a workout for them hangs on the wall in every home. The calendar consists entirely of these words, and any day of the year provides an opportunity to pronounce the correct form. Timur's exam is scheduled for the fourteenth of June, Anya's gym membership is valid until the thirtieth, and the thirty-first of December remains until New Year's. No textbook will provide as many opportunities to repeat the same thing as a regular month with its thirty days. Conversations about the past also work well, when people recall on which date they visited friends or went to the sea.
Everything that has been broken down above, in these short phrases, works all at once. The first three have to be memorized by heart; after that, the word grows from the number itself, the ending adjusts to the noun next to it, and in a long chain, only the last word changes. It's not necessary for a child to keep this list in their head, because the necessary forms come from frequent repetition. It's worth saying dates out loud, arranging meetings, and inviting guests in Russian, and "first of September" from "first of September" will diverge on their own, each will fall into place.
