The application thesis of mathematics in the fifth grade of primary school is 500~3000 words, which requires originality.

Everyone must have been thinking since childhood, how did 0 come from? There are several opinions about the origin of 0. ① The symbol of 0 in ancient Babylon is represented by spaces. For example, in order to represent 101, ancient Babylon wrote 1. 1 (2) In ancient Indian mathematics, the earliest record of finding 0 was in 876 AD, and many mathematicians in Europe also agreed with this view. Indians began to use "?" In the 6th century. Later, it became a circle. In the ninth century, it was fixed as today's "0". 0' s hometown is in China. There is a record of 0 in the book of songs, the earliest poetry collection in China, but at that time, 0 meant "small raindrop at the end of the storm" In China's ancient knot notation, 0 appeared in the negation of "yes", indicating "no". In short, there is no conclusion about the origin of 0.

But in any case, 0 has a very strong vitality from its appearance, and now it is widely used in all fields of society.

In class, I often hear the teacher say that 0 means nothing. If you have 0 yuan money, you have no money. You have 0 pens, which means you don't have a pen. In this case, does 0 degree on the thermometer mean no temperature? The answer is definitely no, the temperature of pure ice-water mixture is 0 degrees.

Think about the prime numbers and composite numbers we learned in the fourth grade! The teacher explained that "natural numbers can be divided into three categories: 1, prime numbers and composite numbers." A natural number with only one factor and two factors of itself is a prime number, a factor greater than three is a composite number, and 1 is a single one. " That 0 is also a natural number. It is the smallest natural number. Is 0 a prime number or a composite number? No one can say this clearly.

I have another question about 0. Natural numbers can also be divided into odd and even numbers. A number divisible by 2 is a composite number, and vice versa. Is 0 odd or even? It looks even, but I'm not sure. Nobody knows what it is.

There are many wonderful and interesting things around us. Let's find them together!

I have written it before. Wish you success!