Yes, zero is a number.
First, you have to consider the definition of “number.” In the mathematical sense, numbers are “objects” (fancy way of saying they’re things, just like a fish is a noun-thing and a cloud is a noun-thing). Number-things are just abstract is all, like the concept of “love” is a abstract thing. And number-things represent amounts, quantity, size, etc.
So if you have three dots (. . .) or three m’s (m m m), the “threeness” is the same between them. Three is a thing independent of the m’s and dots.
Zero fits into this idea just fine. It’s the absence of dots ( ) and the absence of m’s ( ). The “zeroness” is the same regardless of what we are talking about. It is still a number. Maybe a special number, but so is pi (it is irrational, not a counting number, etc).
0 is a numeral. It denotes in the number it is part of that there is nothing in its place.
For example. The number 40. 4 in that is a numeral denoting that there are four lots of tens and 0 in that is a numeral denoting that there are zero lots of ones.
So, in the number 0 the numeral 0 denotes that there are zero lots of ones.
Zero is definitely a number.
When you’re measuring or counting something, zero represents the absence of that thing – but that doesn’t mean that zero itself isn’t a number, it’s actually a very important number!
Almost all of the math we learn in school and use in everyday life and also in banking, science, engineering, and elsewhere all depends on there being a number zero to work with.
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