Tally marks, as it was taught to me in first grade or so, are little lines used to keep a count of things. They're written in groups of five, with the fifth crossing over the first four like this:
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Tally mark
tally are these kind of stripes that represent numbers. For example one stripe is equal to 1 two tally stripes is equal to two etc when you come to five you have to put a diagonal line across the stripes. In frequency tables you just use numbers 1,2,3 etc
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The tally marks I'm familiar with cannot have negative numbers because they are used to count real things and there cannot be a negative apple
Tally Marks? |ιι