科研之友
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摘要
<正>Some primary school students do not think that "0" is meaningful, and more primary school students might even think that "0" means nothing. Is that right? Is the digit "0" meaningful in maths? Absolutely, it is.In maths, "0" is the smallest natural number. It is true that all numbers start from the number "0". That’s to say, there would have been no number without "0". If you want to be sure of that, you may take out your ruler. You’ll surely find that "0" is the start point on the left. Imagine what should the number "1" be like if there was not "0".
