Ternary numeral system facts for kids
Quick facts for kids Numeral systems by culture 


Hindu–Arabic numerals  
Western Arabic Eastern Arabic Khmer 
Indian family Brahmi Thai 
East Asian numerals  
Chinese Suzhou Counting rods 
Japanese Korean 
Alphabetic numerals  
Abjad Armenian Cyrillic Ge'ez 
Hebrew Greek (Ionian) Āryabhaṭa 
Other systems  
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List of numeral system topics  
Positional systems by base  
Decimal (10)  
2, 4, 8, 16, 32, 64  
1, 3, 9, 12, 20, 24, 30, 36, 60, more…  
A ternary /ˈtɜːrnəri/ numeral system (also called base 3) has three as its base. This means that you can only count with 0, 1, and 2. The first ten numbers in ternary are 00, 01, 02, 10, 11, 20, 21, 22, 100, 101. When all the digits in the number reach 2, you add a 1 in front and change everything else to 0. There is another system with the same name more specifically called the balanced ternary system. This system is called that way because 0 is the middle digit, with the other two digits being 1 and 1. That system is used in comparison logic and ternary computers.
×  1  2  10  11  12  20  21  22  100 
1  1  2  10  11  12  20  21  22  100 
2  2  11  20  22  101  110  112  121  200 
10  10  20  100  110  120  200  210  220  1000 
11  11  22  110  121  202  220  1001  1012  1100 
12  12  101  120  202  221  1010  1022  1111  1200 
20  20  110  200  220  1010  1100  1120  1210  2000 
21  21  112  210  1001  1022  1120  1211  2002  2100 
22  22  121  220  1012  1111  1210  2002  2101  2200 
100  100  200  1000  1100  1200  2000  2100  2200  10000 
Similar to a bit in binary, a ternary digit is called a trit.
Related pages
See also
In Spanish: Sistema ternario para niños
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Ternary numeral system Facts for Kids. Kiddle Encyclopedia.