Appearance move to sidebar hide From Wikipedia, the free encyclopedia This article is about the number. For the years, see 10 BC and AD 10. For other uses, see Ten (disambiguation). "10." redirects here; not to be confused with Digital object identifier. Natural number
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10
11 →
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List of numbers
Integers
← 0 10 20 30 40 50 60 70 80 90 →
Cardinal
ten
Ordinal
10th(tenth)
Numeral system
decimal
Factorization
2 × 5
Divisors
1, 2, 5, 10
Greek numeral
Ι´
Roman numeral
X, x
Roman numeral (unicode)
X, x
Greek prefix
deca-/deka-
Latin prefix
deci-
Binary
10102
Ternary
1013
Senary
146
Octal
128
Duodecimal
A12
Hexadecimal
A16
Chinese numeral
十，拾
Hebrew
י (Yod)
Khmer
១០
Armenian
Ժ
Tamil
௰
Thai
๑๐
Devanāgarī
१०
Santali
᱑᱐
Bengali
১০
Arabic & Kurdish & Iranian
١٠
Malayalam
൰
Egyptian hieroglyph
𓎆
Babylonian numeral
𒌋
10 (ten) is the even natural number following 9 and preceding 11. Ten is the base of the decimal numeral system, the most common system of denoting numbers in both spoken and written language.
The number "ten" originates from the Proto-Germanic root "*tehun", which in turn comes from the Proto-Indo-European root "*dekm-", meaning "ten". This root is the source of similar words for "ten" in many other Germanic languages, like Dutch, German, and Swedish. The use of "ten" in the decimal system is likely because humans have ten fingers and ten toes, which people may have used to count by.
Linguistics
[edit]
A collection of ten items (most often ten years) is called a decade.
The ordinal adjective is decimal; the distributive adjective is denary.
Increasing a quantity by one order of magnitude is most widely understood to mean multiplying the quantity by ten.
To reduce something by one tenth is to decimate. (In ancient Rome, the killing of one in ten soldiers in a cohort was the punishment for cowardice or mutiny; or, one-tenth of the able-bodied men in a village as a form of retribution, thus causing a labor shortage and threat of starvation in agrarian societies.)
Mathematics
[edit]
10 is a composite number and a happy number.[1]
10 is the smallest noncototient number.[2]
Decagon
[edit] Main article: Decagon
A ten sided polygon is called a decagon.
List of basic calculations
[edit]
Multiplication
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
20
25
50
100
1000
10 × x
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
200
250
500
1000
10000
Division
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
10 ÷ x
10
5
3.3
2.5
2
1.6
1.428571
1.25
1.1
1
0.90
0.83
0.769230
0.714285
0.6
x ÷ 10
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
1.1
1.2
1.3
1.4
1.5
Exponentiation
1
2
3
4
5
6
7
8
9
10
10x
10
100
1000
10000
100000
1000000
10000000
100000000
1000000000
10000000000
x10
1
1024
59049
1048576
9765625
60466176
282475249
1073741824
3486784401
10000000000
Science
[edit]
The metric system is based on the number 10, so converting units is done by adding or removing zeros (e.g. 1 centimetre = 10 millimetres, 1 decimetre = 10 centimetres, 1 meter = 100 centimetres, 1 dekametre = 10 meters, 1 kilometre = 1,000 meters).
The 10th element of the periodic table is neon.
The 10th transition metal is zinc.
Mysticism
[edit]The tetractys
In Pythagoreanism, the number 10 played an important role and was symbolized by the tetractys.
See also
[edit]
Mathematics portal
List of highways numbered 10
Notes
[edit]
References
[edit]
^Weisstein, Eric W. "Happy Number". mathworld.wolfram.com. Retrieved 2025-04-25.
^N. J. A. Sloane. "A005278: Noncototients". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-06-01.
External links
[edit] Wikimedia Commons has media related to 10 (number). Look up ten in Wiktionary, the free dictionary.
v
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400 to 999
400s, 500s, and 600s
700s, 800s, and 900s
400
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495
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511
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555
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610
613
616
666
693
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720
743
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777
786
800
801
836
840
880
881
888
900
911
971
987
999
1000s and 10,000s
1000s
1000
1001
1023
1024
1089
1093
1105
1234
1289
1458
1510
1728
1729
1980
1987
2000
2016
2520
3000
3511
4000
4104
5000
5040
6000
6174
7000
7744
7825
8000
8128
8192
9000
9855
9999
10,000s
10,000
16,807
20,000
30,000
40,000
50,000
60,000
64,079
65,535
65,536
65,537
70,000
80,000
90,000
100,000s to 10,000,000,000,000s
100,000
142,857
144,000
1,000,000
10,000,000
43,112,609
100,000,000
1,000,000,000
2,147,483,647
4,294,967,295
10,000,000,000
100,000,000,000
1,000,000,000,000
10,000,000,000,000
Large numbers
Authority control databases
National
United States
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Other
Yale LUX
Retrieved from "https://en.wikipedia.org/w/index.php?title=10&oldid=1321603023" Categories:
Integers
10 (number)
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Wikimedia Commons has media related to 10 (number). 
Look up ten in Wiktionary, the free dictionary. 
Retrieved from "https://en.wikipedia.org/w/index.php?title=10&oldid=1321603023" Categories: 
Mathematics portal
Wikimedia Commons has media related to 10 (number). 
Look up ten in Wiktionary, the free dictionary. 
