not a real number
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Zero is very much a real number. In fact it is the additive identity for the set of real numbers.
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zero + zero = zero
Zero is a natural number.
Yes because, without zero there couldn't be any number with a zero in it.
If you multiply any number by zero the answer is zero If you dividea number by zero the answer is undetermined. It is usually infinity , since when you divide a number ( numerator0 by a small the number (denominator) the smaller that denominator the larger the answer, and zero is so small that the answer is infinite. But not always, as in special cases when the numerator is also zero
Any number minus itself equals zero. Any number plus its opposite equals zero. Any number times zero equals zero.