fifteen
fifteen in 30 Sekunden
- Fifteen is the cardinal number 15, following 14 and preceding 16.
- It is commonly used in time-telling (a quarter past) and age.
- The spelling 'fifteen' is often a point of confusion for learners.
- It has significant cultural and sporting associations (Rugby, Tennis).
The word fifteen is a cardinal number representing the quantity that follows fourteen and precedes sixteen. In the decimal system, it is written as the numeral 15. Conceptually, fifteen is a significant milestone in various systems, representing a dozen plus three, or three sets of five. It is an odd composite number, being the product of two prime numbers: three and five. In many cultures, fifteen is associated with the transition from childhood to adolescence, often marked by specific celebrations like the Quinceañera in Latin American traditions.
- Mathematical Identity
- The sum of 7 and 8, or the product of 3 and 5.
- Temporal Significance
- A quarter of an hour (15 minutes) or roughly half a month.
- Ordinal Form
- Fifteenth (15th).
The clock struck fifteen minutes past the hour, signaling the start of the ceremony.
In linguistic terms, 'fifteen' originates from Old English 'fīftīene', a compound of 'five' and 'ten'. This structure is common across Germanic languages, highlighting the base-ten counting system. When we look at the number fifteen, we see it appearing in sports (like the number of players on a Rugby Union team), in history (the 15th century marking the end of the Middle Ages), and in science (Phosphorus is the 15th element on the periodic table). Understanding fifteen is essential for basic arithmetic, time-telling, and financial transactions.
He has lived in this city for fifteen years, seeing it change from a small town to a metropolis.
- Binary Representation
- 1111 (four ones in base 2).
- Hexadecimal
- Represented by the letter 'F'.
Furthermore, fifteen is often used as a threshold. In many jurisdictions, fifteen is the age at which minors gain certain legal rights, such as obtaining a learner's permit for driving or working limited hours. In the context of time, 'fifteen' is synonymous with 'a quarter', as in 'a quarter past' or 'a quarter to'. This makes it one of the most frequently used numbers in daily conversation. Whether you are counting items, measuring time, or discussing age, 'fifteen' serves as a foundational building block of English numeracy.
There are fifteen students in the advanced chemistry lab today.
Using 'fifteen' correctly involves understanding its role as both a noun and an adjective. As an adjective, it modifies a noun to indicate quantity: 'fifteen apples', 'fifteen miles', 'fifteen dollars'. As a noun, it represents the number itself: 'Fifteen is my lucky number'. One of the most common uses of fifteen is in telling time. In English, we often say 'a quarter past' to mean fifteen minutes after the hour. For example, 4:15 can be read as 'four fifteen' or 'a quarter past four'.
- Time Expressions
- 'Fifteen minutes' is often shortened to 'a quarter' in casual speech.
- Age Milestones
- Being 'fifteen' is a specific stage of adolescence, often associated with high school.
The meeting is scheduled for fifteen hundred hours (3:00 PM) in military time.
In writing, the general rule is to spell out 'fifteen' when it begins a sentence or in formal literary contexts. However, in technical, scientific, or mathematical writing, the numeral '15' is preferred. When discussing percentages, 'fifteen percent' (15%) is a common figure used in discounts or interest rates. It is also important to note the spelling: 'fifteen' uses 'f-i-f' rather than 'f-i-v-e', which is a common error for learners who expect it to follow the pattern of 'sixteen' or 'seventeen'.
Another nuance is the use of 'fifteen' in sports. In tennis, 'fifteen' is the first point won in a game (scored as 15, 30, 40, game). In Rugby Union, a team consists of fifteen players on the field. These specific contexts require the speaker to be familiar with the jargon of the sport. In financial contexts, 'fifteen' might refer to a 15-year mortgage, a popular choice for homeowners looking to pay off their debt faster than a traditional 30-year term.
You will encounter the word 'fifteen' in almost every aspect of daily life. In a retail environment, you might hear a cashier say, 'That will be fifteen dollars and fifty cents.' In a classroom, a teacher might instruct, 'Please turn to page fifteen.' On public transport, an announcement might state, 'The next train arrives in fifteen minutes.' Its ubiquity makes it one of the first numbers English learners must master to navigate the world effectively.
The baker sold fifteen loaves of sourdough before noon.
In media and pop culture, 'fifteen' often appears in titles and lyrics. Taylor Swift's song 'Fifteen' explores the emotions and experiences of being a freshman in high school. The phrase 'fifteen minutes of fame', coined by Andy Warhol, is a common idiom used to describe short-lived media publicity. In news broadcasts, you might hear about 'fifteen-year-old' prodigies or 'fifteen percent' increases in market value. The number is large enough to be significant but small enough to be easily grasped.
- In the Kitchen
- 'Let the dough rest for fifteen minutes before baking.'
- In the Office
- 'We have a fifteen-minute stand-up meeting every morning.'
Furthermore, in historical contexts, 'fifteen' is used to denote centuries or specific years. The 15th century (1401-1500) was the age of exploration and the beginning of the Renaissance. Hearing 'fifteen' in a history lecture immediately places the listener in a specific era of human development. In legal settings, 'fifteen' is often the age of consent or the minimum age for certain types of employment in various countries, making it a frequent topic in policy discussions.
One of the most frequent mistakes learners make with 'fifteen' is confusing it with 'fifty'. This is primarily a pronunciation issue. In 'fifteen', the stress is on the second syllable (/fɪfˈtiːn/), and the 'n' sound at the end is distinct. In 'fifty', the stress is on the first syllable (/ˈfɪfti/), and it ends in a vowel sound. This confusion can lead to significant errors in financial transactions or time-telling, where the difference between 15 and 50 is substantial.
Another common error is spelling. Many learners try to follow the pattern of 'five' and write 'fiveteen'. However, the 'v' changes to an 'f', resulting in 'fifteen'. This is similar to 'fifth' and 'fifty'. Remembering this 'v to f' transformation is key to correct spelling. Additionally, learners sometimes forget to use a hyphen when 'fifteen' is part of a compound adjective, such as 'a fifteen minute walk' (incorrect) versus 'a fifteen-minute walk' (correct).
Incorrect: I have fiveteen dollars. Correct: I have fifteen dollars.
In terms of usage, some learners struggle with the 'quarter' terminology. While 'fifteen minutes past' is perfectly correct, native speakers almost always prefer 'a quarter past'. Using 'fifteen' in this context isn't wrong, but it can sound slightly less natural in casual conversation. Finally, be careful with the plural. While you can say 'the number fifteen', you wouldn't say 'I have three fifteens' unless you are referring to multiple objects labeled with the number 15 (like playing cards or jerseys).
To fully understand 'fifteen', it is helpful to compare it with related numerical terms. 'Fourteen' and 'sixteen' are its immediate neighbors. 'Fourteen' follows the 'four + teen' pattern, while 'sixteen' follows 'six + teen'. 'Fifteen' is unique because of the spelling change from 'five'. 'Fifty' is the most commonly confused word due to phonetic similarity, representing five tens rather than ten plus five. 'Fifth' is the ordinal form of five, often used in fractions or rankings.
- Fourteen
- The number before fifteen (14).
- Sixteen
- The number after fifteen (16).
- Fifty
- Five times ten (50).
In more specialized contexts, 'a dozen' (12) and 'a score' (20) are nearby landmarks. 'Fifteen' is sometimes referred to as 'a dozen and three', though this is rare. In the context of time, 'a quarter' is the most important synonym. In tennis, 'fifteen' is the first step toward winning a game. In historical terms, 'the mid-teens' can refer to the years 1914-1916 or the age range of 14-16. Understanding these relationships helps place 'fifteen' within the broader map of English vocabulary.
The difference between fifteen and fifty is thirty-five.
Another set of similar words includes 'quindecimal' (relating to the number 15) and 'quindecennial' (occurring every 15 years). While these are advanced academic terms, they show the Latin roots often associated with the number. In everyday English, however, 'fifteen' remains the dominant term. Whether you are discussing a 'fifteen-year-old' or a 'fifteen-minute' interval, the word is indispensable for clear communication.
How Formal Is It?
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Schwierigkeitsgrad
Wichtige Grammatik
Beispiele nach Niveau
I have fifteen books.
J'ai quinze livres.
Cardinal number used as an adjective.
She is fifteen years old.
Elle a quinze ans.
Used to express age.
There are fifteen students.
Il y a quinze étudiants.
Plural noun follows the number.
It is ten fifteen.
Il est dix heures quinze.
Telling time (hour + minutes).
I see fifteen birds.
Je vois quinze oiseaux.
Simple SVO sentence.
Page fifteen is missing.
La page quinze manque.
Used as a noun/identifier.
Give me fifteen apples.
Donnez-moi quinze pommes.
Imperative sentence.
The bus comes in fifteen minutes.
Le bus arrive dans quinze minutes.
Prepositional phrase of time.
The movie starts at seven fifteen.
Le film commence à sept heures quinze.
Time expression.
He took a fifteen-minute nap.
Il a fait une sieste de quinze minutes.
Compound adjective with hyphen.
I bought fifteen eggs at the market.
J'ai acheté quinze œufs au marché.
Past tense usage.
The temperature is fifteen degrees.
La température est de quinze degrés.
Measurement.
She finished the race in fifteen minutes.
Elle a fini la course en quinze minutes.
Duration.
There are fifteen players on the team.
Il y a quinze joueurs dans l'équipe.
Collective noun context.
I have lived here for fifteen years.
J'habite ici depuis quinze ans.
Present perfect with 'for'.
The discount is fifteen percent.
La remise est de quinze pour cent.
Percentage usage.
Fifteen people were invited to the dinner.
Quinze personnes ont été invitées au dîner.
Spelled out at the start of a sentence.
The 15th century was a time of great change.
Le XVe siècle était une époque de grands changements.
Ordinal form context.
He earned his fifteen minutes of fame.
Il a eu ses quinze minutes de gloire.
Idiomatic expression.
The recipe requires fifteen grams of salt.
La recette nécessite quinze grammes de sel.
Precise measurement.
She was only fifteen when she wrote her first book.
Elle n'avait que quinze ans quand elle a écrit son premier livre.
Adverb 'only' for emphasis.
The walk to the station takes fifteen minutes.
La marche jusqu'à la gare prend quinze minutes.
Subject-verb agreement.
I have fifteen different colors of paint.
J'ai quinze couleurs de peinture différentes.
Descriptive adjective usage.
The hotel is fifteen miles from the airport.
L'hôtel est à quinze miles de l'aéroport.
Distance measurement.
The company reported a fifteen percent growth.
L'entreprise a signalé une croissance de quinze pour cent.
Business terminology.
A fifteen-year mortgage is often more economical.
Un prêt hypothécaire sur quinze ans est souvent plus économique.
Compound adjective.
The sample size was limited to fifteen participants.
La taille de l'échantillon était limitée à quinze participants.
Passive voice in academic context.
The clock tower chimes every fifteen minutes.
Le clocher sonne toutes les quinze minutes.
Frequency expression.
He has fifteen years of experience in marketing.
Il a quinze ans d'expérience en marketing.
Professional qualification.
The solution must be heated for fifteen seconds.
La solution doit être chauffée pendant quinze secondes.
Technical instruction.
There are fifteen chapters in the new novel.
Il y a quinze chapitres dans le nouveau roman.
Structural description.
The committee consists of fifteen members.
Le comité se compose de quinze membres.
Formal collective noun.
The treaty was signed on the fifteenth of July.
Le traité a été signé le quinze juillet.
Specific date format.
Fifteen as a number holds unique properties in number theory.
Le quinze en tant que nombre possède des propriétés uniques en théorie des nombres.
Abstract noun usage.
The author explores the angst of being fifteen.
L'auteur explore l'angoisse d'avoir quinze ans.
Gerund phrase context.
The project was delayed by a fifteen-day strike.
Le projet a été retardé par une grève de quinze jours.
Compound adjective for duration.
The resolution was passed with fifteen votes in favor.
La résolution a été adoptée avec quinze voix pour.
Formal voting context.
He meticulously arranged the fifteen artifacts.
Il a méticuleusement disposé les quinze artefacts.
Adverbial modification.
The poem consists of fifteen stanzas.
Le poème se compose de quinze strophes.
Literary analysis.
A fifteen-fold increase in productivity was observed.
Une augmentation de quinze fois de la productivité a été observée.
Multiplicative adjective.
The fifteenth-century manuscript was remarkably preserved.
Le manuscrit du XVe siècle était remarquablement conservé.
Historical adjective.
The quindecennial celebration occurs every fifteen years.
La célébration quindécennale a lieu tous les quinze ans.
Advanced vocabulary link.
The symphony's fifteen movements create a complex narrative.
Les quinze mouvements de la symphonie créent un récit complexe.
Musicological context.
The legal age of majority was once fifteen in some jurisdictions.
L'âge légal de la majorité était autrefois de quinze ans dans certaines juridictions.
Legal history.
The star is fifteen light-years away from Earth.
L'étoile est à quinze années-lumière de la Terre.
Astronomical measurement.
The philosopher debated the significance of the number fifteen.
Le philosophe a débattu de la signification du nombre quinze.
Metaphysical context.
The fifteen-man squad was ready for the mission.
L'escouade de quinze hommes était prête pour la mission.
Military terminology.
The pH level was exactly fifteen, which is theoretically impossible.
Le niveau de pH était exactement de quinze, ce qui est théoriquement impossible.
Scientific hypothesis.
Häufige Kollokationen
Häufige Phrasen
fifteen minutes of fame
a quarter past fifteen
fifteen-love (tennis)
fifteen-all (tennis)
fifteen-minute break
fifteen-year-old
top fifteen
bottom fifteen
fifteen times
fifteen hundred
Wird oft verwechselt mit
Redewendungen & Ausdrücke
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Leicht verwechselbar
Satzmuster
So verwendest du es
15 is a 'young teen'.
15 is a multiple of 3 and 5.
15 minutes = a quarter.
- Spelling it as 'fiveteen'.
- Pronouncing it like 'fifty'.
- Forgetting the hyphen in 'fifteen-minute'.
- Using 'fifteens' as a plural for people (use 'fifteen people' instead).
- Confusing 'fifteenth' with 'fiftieth'.
Tipps
The 'F' Rule
Remember that five changes to 'fif' in fifteen, fifty, and fifth. Never use a 'v'.
Stress the Teen
Always put the emphasis on the second syllable to make sure people hear '15' and not '50'.
Time Saver
When someone says 'a quarter', they almost always mean fifteen minutes.
Hyphenate Adjectives
Use a hyphen when fifteen describes a noun, like 'a fifteen-year-old boy'.
Ordinal Form
The ordinal is 'fifteenth'. Note the 'f' is still there!
Final N
Listen for the 'n' at the end. Fifty ends in a vowel; fifteen ends in a consonant.
Casual Time
In casual speech, you can just say 'I'll be there in fifteen' and people will know you mean minutes.
Starting Sentences
Always write 'Fifteen' with a capital F and spell it out if it's the first word.
Quick Math
Fifteen is 3 times 5. This is helpful for splitting bills or groups.
Quinceañera
If you are in a Spanish-speaking area, 15 is a very important birthday!
Einprägen
Eselsbrücke
Fifteen has 'fif' like 'fifty', but 'teen' like 'thirteen'.
Wortherkunft
Old English fīftīene
Kultureller Kontext
15 is often a transitional legal age for work or driving permits.
A sport played with 15 players.
15th birthday celebration for girls in Latin culture.
15 is the first point in a game.
Im Alltag üben
Kontexte aus dem Alltag
Gesprächseinstiege
"What were you doing when you were fifteen?"
"Can you wait fifteen minutes?"
"Do you think fifteen dollars is too much for a burger?"
"What happens in your country when someone turns fifteen?"
"How many times have you seen your favorite movie? Fifteen?"
Tagebuch-Impulse
Describe your life when you were fifteen years old.
What can you accomplish in fifteen minutes?
Write about a historical event from the 15th century.
If you had fifteen million dollars, what would you do?
List fifteen things you are grateful for today.
Häufig gestellte Fragen
10 FragenIt is always spelled 'fifteen'. The 'v' in five changes to an 'f'.
Fifteen has the stress on 'teen' (fif-TEEN). Fifty has the stress on 'fif' (FIF-ty).
Yes, but 'a quarter past ten' is more common among native speakers.
No, fifteen is an odd number because it cannot be divided by two evenly.
The ordinal form is 'fifteenth'.
It is written as XV.
No, it is a composite number because it can be divided by 3 and 5.
An urban planning concept where all necessities are within a 15-minute walk or bike ride.
It is based on the clock face, where the first point moves the hand to 15.
In some cultures, yes, but it varies widely.
Teste dich selbst 78 Fragen
/ 78 correct
Perfect score!
Summary
Fifteen is a foundational number in English, essential for time, age, and basic math. Its spelling (fif- instead of five-) and pronunciation (stress on -teen) are critical for learners to master to avoid confusion with fifty.
- Fifteen is the cardinal number 15, following 14 and preceding 16.
- It is commonly used in time-telling (a quarter past) and age.
- The spelling 'fifteen' is often a point of confusion for learners.
- It has significant cultural and sporting associations (Rugby, Tennis).
The 'F' Rule
Remember that five changes to 'fif' in fifteen, fifty, and fifth. Never use a 'v'.
Stress the Teen
Always put the emphasis on the second syllable to make sure people hear '15' and not '50'.
Time Saver
When someone says 'a quarter', they almost always mean fifteen minutes.
Hyphenate Adjectives
Use a hyphen when fifteen describes a noun, like 'a fifteen-year-old boy'.
Beispiel
The meeting starts at fifteen past two.
Verwandte Inhalte
Im Kontext lernen
Mehr general Wörter
a lot of
A2Eine große Menge oder Anzahl von etwas.
about
A1Über ; bezüglich einer Sache. Beispiel: Ein Buch über Tiere.
above
A2An einem höheren Ort als etwas anderes, direkt darüber.
accident
A2Ein Unglück, das schlecht ausgeht und manchmal jemanden verletzt.
action
A2Handlung ist der Prozess, etwas zu tun, um ein Ziel zu erreichen.
after
A2Nach dem Essen gingen wir spazieren.
afterward
A2Wir haben zu Abend gegessen und sind danach spazieren gegangen.
again
A2Das Wort 'again' bedeutet 'wieder' oder 'noch einmal'. Es wird verwendet, um eine Wiederholung auszudrücken.
aged
B1Im Alter von ; gealtert. Der abgelagerte Käse schmeckt gut.
alive
A2Lebendig, nicht tot. Beispiel: 'Der Fisch ist noch lebendig.'
