What is tally marks?
2 answers:
Tally marks, also called hash marks, are a unary numeral system. They are a form of numeral used for counting. They are most useful in counting or tallying ongoing results, such as the score in a game or sport, as no intermediate results need to be erased or discarded. Every fifth mark is drawn across the previous 4 marks, so you can easily see groups of 5
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