The amount in your bank account. The page number of a book. This deadline is fast approaching. Times, dates, phone numbers, addresses: the whole world is made of numbers. but how much do you do*Actually*You know it. It turns out that the numbers are a million times more puzzling than the most complicated equation Pythagoras could have imagined. Here is the proof. And for more awesome tidbits, check out these40 Word Facts That Will Make You Say "OMG!"

1

"One hundred" does not mean 100

The word "hundred" actually derives from the Old Norse word "hundrath", which actually means 120 and not 100. More specifically, "hundrath" means "long hundredth" in Old Norse, which is equal to 120 due to the duodecimal system. But good luck arguing that your $100 bill is worth 20% more than it actually is. And for more amazing definitions, check out these47 Cool Foreign Words That Will Make You Sound Crazy And Sophisticated

2

there is only one even prime number

The number 2 is also the smallest and the first prime number (since every second even number is divisible by two).

3

The square root of two is called the "Pythagorean constant."

You may remember the Pythagorean theorem from 10th grade geometry class, but have you heard of the Pythagorean constant? Well, here are the facts: the square root of 2 (1.41) is known asThe Pythagorean constant. this is alsothe first irrational numbernever be found out.

It all has to do with the Greek mathematician Pythagoras, and there is afascinating storybehind his famous line they were definitely not taught in high school: that Babylonian mathematicians discovered his famous theory 1,000 years before him! And for more historical facts you weren't taught in school, check these out.30 crazy facts that will change the way you see history

4

Zero is the only number that cannot be represented in Roman numerals.

There are zero zeros in total in Roman numerals. While the ancient Greeks were*consciously*of zero as a concept, they did not consider zero as a number. For example, Aristotle decided that zero is not a number because it cannot be divided by zero. Instead of a Roman numeral, the Latin word "nulla" would have been used to represent the term zero. The reason there was no number for zero is that there was no need for a number to represent it.

5

Different cultures discovered zero at different times.

The idea of zero as a number was invented all over the worldother timesin History. Despite this isolated assumption, it is generally believed that around AD 600. C., the Indian astronomer and mathematician BrahmaguptaBrahmaguptaHe contributed extensively to mathematics and astronomy and is known for explaining how to find the cube and cube root of a whole number, as well as establishing rules that make it easy to calculate squares and square roots. And for more curiosities about the paradigm shift, here they are50 facts about the world that will put a smile on your face.

6

Roman numerals were invented as a means of trade.

the registration formIt was usedas a means for the Romans to easily value various goods and services, and were widely used throughout the Roman Empire for everyday processes. After the fall of the Roman Empire, Roman numerals continued to be used throughout Europe. However, this stopped around 1600. Roman numerals are represented by seven different letters: I, V, X, L, C, D, and M.

7

zero is an even number

Mathematically, an even number is a number that can be divided by two and still be a whole number. Zero meets the criteria for this, because if you halve zero, you get zero. But if you're confused, you're not alone: research from the University of Cambridge in the 1990s showed that people are 10% slower to decide whether or not zero is even than when, say, 2 is.

8

There is only one number written with the same number of letters as itself.

You probably never thought about it, but there is only one number written with the same number of letters as itself. Can you guess which one? NO? Well, it's 4. Oh, and the number 4 on a calculator is made up of four light bars. Share this fact at your next party! (However, you may not make many friends.) And for more cocktail snacks, here they are.50 Facts So Crazy You Won't Believe They're True

9

Take any number and multiply it by three for a cool trick

Take any number and multiply it bythree. Then take the digits of that new number and add them. Whatever the number, it will always be divisible by three, no matter what number you start with. For example:

3 x 4 = 12

1 + 2 = 3

3/3 = 1

10

Six is the smallest perfect number

In number theory, a perfect number is a positive integer equal to the sum of its positive divisors. According to this rule, six is theleast perfect number. If you're scratching your head and saying, "Huh?" Here's an example to clarify:

1 + 2 + 3 = 6.

The next perfect number occurs at 28. It really turns out to be perfection.*Y*few and far...

11

The number system we use today is older than ever.

The number system we use today, the one made up of the 10 symbols (you know: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10), is actually based on aIndo-Arabic numeral system. This developed over 1,000 years ago, but it was not until*15th century*that these now-known symbols were used throughout Europe.

12

the number pi is irrational

The number pi, also known as the ratio of the circumference to the diameter of a circle, is irrational. This is because pi cannot be written as a fraction. Also: Pi, when written as a decimal, never repeats and never ends. Oh, and there is a specific Pi Day (March 14 or March 14).

13

2 and 5 are the only prime numbers that end in 2 and 5.

A prime number is a natural number greater than one that cannot be obtained by multiplying two smaller natural numbers. So, not to speak mathematically, prime numbers are numbers greater than 1 that can only be formed by multiplying 1 by itself. A natural number greater than one.*No*The prime number is called a composite number.

14

The Fibonacci sequence occurs in nature.

Leonardo Fibonacci was from Pisa. He lived in Italy in the 13th century and is credited with discovering a mathematical sequence that now bears his name: the Fibonacci sequence. Starting at 0 and 1, this sequence is created as the sum of the previous two numbers in the sequence. For example:

0, 1, 1, 2, 3, 5, 8, 13, 21, 34, …

The Fibonacci sequence occurs frequently in nature, most commonly in rabbit husbandry. (Put one rabbit together with another rabbit and you have two rabbits making three, which then mate to make five, and so on.) In addition, the song "Lateralus" was written by the American progressive metal band Tool to the rhythm of Fibonacci. Sequence. And for more great facts about modern music, check out these40 facts about songs that really sing.

15

9 is considered a "magic" number

Have you heard that the number 9 is considered a "magic" number? NO? Well, here's why: When you multiply a number by 9 and add all the digits of the new number, you get the sum*Always*add 9. For example:

8 x 9 = 72

7 + 2 = 9

O:

4x9 = 36

3 + 6 = 9

To see? It's really magical. Attempt. Each combination always takes you back to 9!

sixteen

The number Pi means the food "PIE"

If you put pi backwards (to the first two decimal places of 3.14), it actually says "PIE" in large, blocky letters. Do not believe me? have a lookHere.

17

There are strange reasons why cats are said to have 9 lives

Whether you love cats or hate them, you've probably heard the myth that cats have nine lives. But have you ever wondered where this idea came from? It comes from your ability to jump and land without getting hurt! turns out there issome theoriesbecause the number nine, where one is 9, is a magical number and has always been revered as such.

18

one is not a prime number

The number 1 is often confused with a prime number. But that's not the case, you don't meet the requirements to be prime (divisible by 1 and itself). Divide 1 by 1 and you get... 1. Nothing was shared.

19

If a pizza has a radius "Z" and a height "A", the equation becomes...

Since the volume of a cylinder is PI times the radius squared times the height, this would mean that a pizza with radius "Z" and height "A" would have the volume of... PI * z * z * a.

20

Blackjack did not start at 21

Anyone who has played blackjack knows that the goal is to get to 21 or as close as possible without going over. However, the game is believed to have originated in Italy.game thirty one, dating from the fifteenth century. The goal is similar (get as close to 31 as possible), but with a few minor differences: all cards between 8 and 10 are removed from the deck, and face cards are worth half their face value.

21

7 is the most popular "favorite number"

If you approach someone on the street and ask them what their favorite number is (any whole number between 1 and 100), there is almost a 10% chance that they will say "7". Those are the findings of mathematician Alex Bellos, who asked respondents to identify his favorite number and found that "7" was the most popular choice.It was selected in 9.7% of cases.

22

The most popular two-digit number is 13.

You'd think unlucky number 13 would be the one most people would want to stay away from. But in Alex Bellos' poll, it ended up being the most popular double-digit number (chosen by 5% of all respondents) and the sixth most popular number overall (after 7, 3, 8, 4, and 5 in the poll). upper part) . 5 points - on the right, the number five is also the fifth most popular number).

23

Is there such a thing as lucky numbers?

You've heard that one is the loneliest number, but do you know numbers?can be happy, for? To test whether a number is "lucky", replace it with the sum of the squares of its digits and continue the process until the number equals 1 or enters a loop that does not contain 1. If the process ends in 1, the number is lucky. Let's take 23 for example:

22 + 32 = 13

12 + 32 = 10

12+ 02= 1

This means that 23 is a lucky number! If you count to 1000, you will find that there are 143 lucky numbers.

24

7 is arithmetically unique

The reason why the number 7 is so popular is that it is mathematically unique. alex bellos,again, explained: “Of the first 10 numbers, seven is prime. You cannot multiply or divide them within the group. It feels unique." For example, you can multiply 4 by 2 to get 8 or divide 10 by 2 to get 5, but you can't do anything with 7.

25

India's national game means 'twenty-five'

The Cross and Circle board gameThank youis a very popular game in India, dating back centuries, it is played on a board in which a player throws severalBúzios. Its name means "twenty-five" in Hindi, which refers to the highest score that can be achieved by playing shells (there is also a version where the score can be as high as 30). And for more fun games, check out these12 fun family games that everyone will enjoy.

26

Six weeks = 10! seconds

That is, 10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1 = 3,628,800 seconds = 60,480 minutes = 1,008 hours = 42 days = 6 weeks.

27

There is not enough space in the world to write a googolplex

A googol means 1 followed by 100 zeros. TO*googolplex*is 1 followed by a*for*zeros If it's hard to imagine how long that number would be, there's a good reason: writing it down would create such a large number, if you were to write it down and print it in a large series of books, it would weigh more than the entire planet. . .

28

The city of Mile High is*Exactly*a mile up

The city of Denver, Colorado has an elevation of exactly 5,280 feet, which is the length of one mile, which is why Denver is called the "mile high" city.

29

In Asia, 4 is considered an unlucky number.

The number 4 is also known as “tetraphobia”.superstitionand distrust in much of East Asia. This could be because the word "four" sounds similar to "death" in several Asian languages, including Chinese, Japanese, and Korean.

30

In Thailand, “555” is hilarious

Teenagers in Thailand write (say it three times quickly) the digits "555" to indicate something funny. The reason? "5" is pronounced "ha," so "555" means "hahaha." So "55555" means "hahahahaha" or "ha" squared.

31

(6 × 9) + (6 + 9) = 69

Do not laugh. Just plug it into your calculator and you'll see that it's correct.

32

Most months have 31 days.

Of the twelve months that make up a calendar year, most have 31 days: January, March, May, July, August, October, and December. Only four months - April, June, September and November - have 30 days. And of course, February usually only has 28 days, except on leap years when the month jumps to 29 days, which happens every four years. The next leap year is 2020. You can tell if a year is a leap year by the fact that the year is divisible by four with no remainder.

33

In a group of 23 people, it is likely that two will have the same birthday.

In a sample of 23 people, there is a 50% chance that two will have the same birthday. This phenomenon is (appropriately) called the birthday problem. There is also a whole calculation as to why this is a thing. It has everything to do with probability. You can find out exactly how it works here.explainer, by the mathematician Brett Berry, since she can explain it much better than we can.

34

We see odd numbers as masculine, even numbers as feminine.

You wouldn't think numbers could have genders, but in our weird brains, apparently, they do.Look forpublished in*Journal of Experimental Psychology*found that when an odd number was paired with a baby, participants were much more likely to believe the baby was a boy, while when they were paired with an even number, they were more likely to believe the baby was a girl.

It is an assumption with a long history.OK*living science*:: “Our tendency to assign a gender to numbers has a long history. Both the Pythagorean philosophy of ancient Greece and the Chinese philosophy of yin and yang considered numbers to be gender-specific. Both cultures also viewed odd numbers as masculine and even numbers as feminine.

35

There is a specific name for 35 years

It is called "Coral Jubilee". Go somewhere with scuba!

36

There are more ways to arrange a deck of cards than there are atoms on Earth.

This may sound crazy, but the fact is that when you shuffle a deck of cards, there has probably never been an exact order in the history of the universe. Cassandra Lee at McGill Universitybreak it: “There is somewhere in the range of 8 x 1067 ways to order a deck. That's an 8 followed by 67 zeros. To put it in perspective, even if someone could rearrange a deck of cards every second for the entire existence of the universe, the universe would end before it had gone a billionth of the way to find a repeat."

37

7 is considered a lucky number.

Seven is the most significant number in all religions and cultures. For example: There are seven colors in the rainbow, seven days in the week, seven tones in the musical scale, seven seas,*mi*seven continents. After all, seven appeared frequently in the world's most popular works of fiction, such as Snow White (The Seven Dwarfs) and, of course,James Bond (007).

38

And the number 13 is considered an unlucky number.

You have probably heard that the number 13 is considered an unlucky number.For example, think about Friday the 13th.There are other reasons why this number is so superstitious. One is that 13 people were present at the Last Supper. Oh, and traditionally there were 13 steps up to the gallows; Also, a coven usually had 13 members.

39

111.111.111 × 111.111.111 = 12.345.678.987.654.321

But good luck finding a calculator that can factor equations worth millions.

40

40 below is the only temperature that is equal in Fahrenheit and Celsius

Does not require conversion. Minus 40 degrees or "40 below" is the only temperature that is the same in Fahrenheit and Celsius. Other fun facts about the number 40: There are 40 standard cells on a Monopoly board, the standard American workweek is 40 hours, and 40 is the maximum number of players an MLB team can have on its roster at one time. Oh, and a typical pregnancy lasts 40 weeks. The more you know! And as you learn more about numbers, see how you can make them work for you by checking out theThe most common Powerball winning numbers.

*To discover more amazing secrets on how to live your best life,**Click here**to follow us on Instagram!*

## FAQs

### What are 10 facts in math? ›

**20 Cool Facts About Maths**

- The word “hundred” comes from the old Norse term, “hundrath”, which actually means 120 and not 100.
- In a room of 23 people there's a 50% chance that two people have the same birthday.
- Most mathematical symbols weren't invented until the 16th century.

**What are some interesting maths facts for numbers? ›**

Interesting Facts about Mathematics in Daily Life

**If anyone multiplies 111,111,111* 111, 111, 111, you get a palindromic number**. The shape of the sunflower follows the Fibonacci sequence. The fraction of Pi is 22 over 7, but its actual number is still unknown to everyone.

**What are number facts to 20? ›**

What are the Addition Facts to 20? The addition facts to 20 are simply **the sums from 0+0 up to 10+10**. They're the building blocks of arithmetic, and usually the first math facts that children master.

**What are math facts about 25? ›**

In mathematics

**It is a square number, being 5 ^{2} = 5 × 5**. It is one of two two-digit numbers whose square and higher powers of the number also ends in the same last two digits, e.g., 25

^{2}= 625; the other is 76. It is the smallest square that is also a sum of two (non-zero) squares: 25 = 3

^{2}+ 4

^{2}.

**What is number 8 math facts? ›**

In mathematics. Eight is **the third composite number, with proper divisors 1, 2, and 4**. It is the third power of two, being 2^{3} (or two cubed), and the first number of the form p^{3}, p being an integer greater than 1.

**What is the hardest math fact? ›**

**The Riemann Hypothesis**, famously called the holy grail of mathematics, is considered to be one of the toughest problems in all of mathematics.

**What is number 18 mathematical facts? ›**

**In mathematics**

- Eighteen is a composite number, its divisors being 1, 2, 3, 6 and 9. ...
- In base ten, it is a Harshad number.
- It is an abundant number, as the sum of its proper divisors is greater than itself (1+2+3+6+9 = 21). ...
- It is the number of one-sided pentominoes.

**Why is 6174 a magic number? ›**

This number is renowned for the following rule: Take any four-digit number, using at least two different digits (leading zeros are allowed). Arrange the digits in descending and then in ascending order to get two four-digit numbers, adding leading zeros if necessary. Subtract the smaller number from the bigger number.

**Why is 73 an important number? ›**

“Why? **73 is the 21st prime number**. Its mirror, 37, is the 12th, and its mirror, 21, is the product of multiplying seven and three ... and in binary, 73 is a palindrome, 1001001, which backwards is 1001001.”

**What is number 27 fun facts? ›**

Ending with some maths — what else — **twenty-seven is the only positive whole number that is exactly three times the sum of its digits**: 2 + 7 = 9 and 9 x 3 = 27. It's also a perfect cube, 33 = 3 x 3 x 3 = 27, and it's equal to the sum of the digits from two to seven, 2 + 3 + 4 + 5 + 6 + 7 = 27.

### What is number facts 4? ›

Number Facts is **a series of activity books designed to foster fluency in number facts (or 'tables') for primary school children**. This attractive and engaging series features an innovative approach to basic number facts, teaching children to understand, not just do, maths.

**What is number 95 facts? ›**

**95 is:**

- the 30th distinct semiprime and the fifth of the form (5. ...
- the third composite number in the 6-aliquot tree. ...
- the last member in the third triplet of distinct semiprimes 93, 94, and 95.
- an 11-gonal number.
- a Thabit number.
- the lowest integer for which the Mertens function is greater than 1.

**What is a fact about 26 math? ›**

**26 is the only integer that is one greater than a square (5 ^{2} + 1) and one less than a cube (3^{3} − 1)**.

**What are math facts about 50? ›**

**Fifty is the smallest number that is the sum of two non-zero square numbers** in two distinct ways: 50 = 1^{2} + 7^{2} = 5^{2} + 5^{2}. It is also the sum of three squares, 50 = 3^{2} + 4^{2} + 5^{2}, and the sum of four squares, 50 = 6^{2} + 3^{2} + 2^{2} + 1^{2}. It is a Harshad number.

**What are math facts about 37? ›**

**37 is the first irregular prime, and the third isolated prime without a twin prime**. It is also the third cuban prime, the fourth emirp, and the fifth lucky prime. 37 is the third star number and the fourth centered hexagonal number. The sum of the squares of the first 37 primes is divisible by 37.

**What are math facts about 7? ›**

Mathematics. **Seven, the fourth prime number, is not only a Mersenne prime (since 2 ^{3} − 1 = 7) but also a double Mersenne prime since the exponent, 3, is itself a Mersenne prime**.

**What is number 7 mathematical facts? ›**

**The number seven is a prime number**. If you're not in the loop, a prime number is a number that can only be divided by itself and the number one. Seven is the fourth prime number, but it's also a Mersenne prime. A Mersenne prime is more than a standard prime number, as it's equated to 2^n – 1.

**What are double facts 7 8? ›**

The real magic comes with “near doubles facts” or “doubles facts plus one.” If we know 7+7=14, then when we see 7+8 we know **8 is one more than 7**. So one more than 14 is 15. So, the answer is 15. We can also take it with one less than the doubles fact.

**What are the 7 hardest math problems? ›**

Clay “to increase and disseminate mathematical knowledge.” The seven problems, which were announced in 2000, are the **Riemann hypothesis, P versus NP problem, Birch and Swinnerton-Dyer conjecture, Hodge conjecture, Navier-Stokes equation, Yang-Mills theory, and Poincaré conjecture**.

**Has 3X 1 been solved? ›**

After that, the 3X + 1 problem has appeared in various forms. It is one of the most infamous unsolved puzzles in the word. Prizes have been offered for its solution for more than forty years, but **no one has completely and successfully solved it** [5].

### What is 1 1 in math? ›

Answer: 1 : 1 ratio means **when two quantities are measured or expressed in the same proportion**. The ratio a : b helps us to know how much one part of a is equivalent to one part of b. Explanation: When two quantities are taken in the same proportion, they are said to be in the ratio of 1:1.

**What are math facts about 31? ›**

31 is the **11th prime number**. It is a superprime and a self prime (after 3, 5, and 7), as no integer added up to its base 10 digits results in 31. It is a lucky prime and a happy number; two properties it shares with 13, which is its dual emirp and permutable prime. 31 is also a primorial prime, like its twin prime, 29.

**What is a math fact about 13? ›**

The number 13 is the **sixth prime number**. It is a twin prime with 11, as well as a cousin prime with 17. It is the second Wilson prime, of three known (the others being 5 and 563), and the smallest emirp in decimal. A happy number and a lucky number.

**Is the number 19 special? ›**

The number 19 in numerology **represents spiritual growth and expansion**. This number encourages you to reach for your goals and to dream big! It also represents faith, hope, and good luck. When you see this number, it is a reminder to stay positive and optimistic.

**Which 4 digit number is best? ›**

the greatest four-digit number is **9999**.

**Why is 9 called magic number? ›**

The number 9 is revered in Hinduism and considered a complete, perfected and divine number because **it represents the end of a cycle in the decimal system**, which originated from the Indian subcontinent as early as 3000 BC.

**What's a lucky 4 digit number? ›**

A four digit number (numbered from 0000 to 9999) is said to be lucky **if the sum of first two digits is equal to the sum of its last two digits**. If a four digit number is picked up at random, then the probability that it is lucky is. No worries!

**Is 25 a perfect number? ›**

The factors of 25 (excluding the number 25) = 1, 5. Their sum is 1 + 5 = 6. Therefore, **25 is not a perfect number**.

**What is the most important number ever? ›**

One of the most important numbers in our universe is the number **Pi or π**. Explore humankind's odyssey—attempts throughout the ages that truly transcend cultures—to compute, approximate, and understand this enigmatic number.

**Is the number 9 important? ›**

**The number 9 is powerful**. It represents completion, although not a final ending—more like the fulfillment of one cycle so that you can prepare to initiate the next one. It's a recognition of life's ongoing ebb and flow.

### What is a fun fact about the number 28? ›

28 — Twenty-eight

**28 has the infamy of being the second perfect number**. This may sound like it came in second place in some kind of 'best number competition', but in fact a perfect number is one where all of the numbers that divide it, perfectly add up to give the number itself: 1 + 2 + 4 + 7 + 14 = 28.

**Why is 30 a special number? ›**

The symbolism of the number 30 is **tied to balance and equilibrium**. This number encourages you to find balance in your life, both physically and emotionally. It is a sign that you are on the right track, and that your angels are supporting you every step of the way.

**What are number facts about 23? ›**

In mathematics. Twenty-three is the **ninth prime number, the smallest odd prime that is not a twin prime**. It is, however, a cousin prime with 19, and a sexy prime with 17 as well as 29. Twenty-three is also the fifth factorial prime, and the second Woodall prime.

**What is number 24 fun facts? ›**

Twenty-four also represents the number of carats in pure gold, the number of letters in the Greek alphabet (ancient and modern) and the number of points on a backgammon board. Mathematically, **24 is the smallest number with exactly 8 numbers that divide it** — can you name them? And, it's equal to exactly 4 factorial: 4!

**What are number facts 3? ›**

What are Number Facts? Number facts are **simple addition, subtraction, multiplication and division facts** which are sometimes referred to as number bonds.

**What is number facts 2? ›**

Number Facts is **a series of activity books designed to foster fluency in number facts (or 'tables') for primary school children**. This attractive and engaging series features an innovative approach to basic number facts, teaching children to understand, not just do, maths.

**What are the 2 facts about number 10? ›**

**Fun Facts**

- 10 is a natural number.
- 10 is an even number.
- 10 is a composite number.
- 10 is the sum of the first four consecutive whole numbers 1, 2, 3, and 4 and of the first three prime numbers 2, 3, and 5.

**Why is 93 a special number? ›**

In classical Persian finger counting, the number 93 is represented by a closed fist. Because of this, **classical Arab and Persian poets around 1 CE referred to someone's lack of generosity by saying that the person's hand made "ninety-three"**.

**What are math facts about 38? ›**

**38 is the sum of the squares of the first three primes**. 37 and 38 are the first pair of consecutive positive integers not divisible by any of their digits. 38 is the largest even number which cannot be written as the sum of two odd composite numbers.

**What are math facts of 32? ›**

**There are 6 factors of 32, which are 1, 2, 4, 8, 16 and 32**. Here, 32 is the biggest factor. The sum of all factors of 32 is 63. Its Prime Factors are 1, 2, 4, 8, 16, 32 and (1, 32), (2, 16) and (4, 8) are Pair Factors.

### What are math facts about 34? ›

**34 is the ninth distinct semiprime and has four divisors including one and itself**. Its neighbors, 33 and 35, also are distinct semiprimes, having four divisors each, and 34 is the smallest number to be surrounded by numbers with the same number of divisors as it has.

**What are math facts about 44? ›**

In mathematics

**Forty-four is a repdigit and palindromic number in decimal**. It is the fourth happy number, and the fourth octahedral number. Since the greatest prime factor of 44^{2} + 1 = 1937 is 149 and thus more than 44 twice, 44 is a Størmer number. Given Euler's totient function, φ(44) = 20 and φ(69) = 44.

**What is a cool math fact? ›**

1. **The word “hundred” comes from the old Norse term, “hundrath”, which actually means 120 and not 100**. 2. In a room of 23 people there's a 50% chance that two people have the same birthday.

**What are math facts for 22? ›**

22 is **a palindromic number and the eighth semiprime; its proper divisors are 1, 2, and 11**. It is the second Smith number, the second Erdős–Woods number, and the fourth large Schröder number. It is also a Perrin number, from a sum of 10 and 12.

**What are math facts for 16? ›**

**16 is a composite number, and a square number, being 4 ^{2} = 4 × 4**. It is the smallest number with exactly five divisors, its proper divisors being 1, 2, 4 and 8. In English speech, the numbers 16 and 60 are sometimes confused, as they sound very similar. Sixteen is the fourth power of two.

**What are some fun math facts about 12? ›**

**Twelve is the sixth composite number, and the smallest number with exactly six divisors**, its divisors being 1, 2, 3, 4, 6 and 12. It is a pronic number, and the smallest abundant number, since it is the smallest integer for which the sum of its proper divisors (1 + 2 + 3 + 4 + 6 = 16) is greater than itself.

**What are some math facts about 73? ›**

73 is the **21st prime number**, while 37 is the 12th, which is a second mirroring; and. 73 has a prime index of 21 = 7 × 3; a product property where the product of its base-10 digits is precisely its index in the sequence of prime numbers.

**What does ten facts mean? ›**

Add Ten facts (10 + 3, 7 + 10) apply when 10 is added to a single-digit number. This strategy helps students work flexibly with tens and ones. Add Nine facts are fast when you know how to make 10.

**What is number facts to 10? ›**

What are the Basic Facts to 10? Basic facts or number facts are **simple addition, subtraction, multiplication and division equations** that kids need to learn to solve basic Maths problems quickly.

**What are math facts examples? ›**

The math facts are the sums and products of the numbers from 1 to 9, as well as the related subtraction and division problems: **Addition from 1 + 1 to 9 + 9**. **Subtraction from 1 – 1 to 18 – 9**. **Multiplication from 1 × 1 to 9 × 9**.

### What is 7 called? ›

7 (seven) is the **natural number following 6 and preceding 8**. It is the only prime number preceding a cube. ← 6. 7. 8 →

**What is 11 called? ›**

11 (**eleven**) is the natural number following 10 and preceding 12.

**What is special about number 12? ›**

number symbolism

The number 12 is **strongly associated with the heavens—the 12 months, the 12 signs of the zodiac, and the 12 stations of the Moon and of the Sun**. The ancients recognized 12 main northern stars and 12 main southern stars.

**What are number facts of 9? ›**

Nine is **the highest single digit Arabic numeral**. You can't go any higher without tacking on an extra digit. Nine has the last say, every time.

**What is a number fact for 100? ›**

100 is **a perfect square number and its square root is 10**. 100 is the basis of percentages ("per cent" meaning "per hundred" in Latin), with 100 percent being a full amount. There are 100 pennies in one dollar.