Restklassenringe (Z)/mod 10/Additionstafel

${\begin{array}{c||c|c|c|c|c|c|c|c|c|c|}+&0&1&2&3&4&5&6&7&8&9\\\hline 0&0&1&2&3&4&5&6&7&8&9\\1&1&2&3&4&5&6&7&8&9&0\\2&2&3&4&5&6&7&8&9&0&1\\3&3&4&5&6&7&8&9&0&1&2\\4&4&5&6&7&8&9&0&1&2&3\\5&5&6&7&8&9&0&1&2&3&4\\6&6&7&8&9&0&1&2&3&4&5\\7&7&8&9&0&1&2&3&4&5&6\\8&8&9&0&1&2&3&4&5&6&7\\9&9&0&1&2&3&4&5&6&7&8\\\end{array}}$