About 1500 years ago, European mathematicians did not know how to use "0". They use Roman numerals. Roman numerals are symbols representing numbers, which are combined to represent different numbers according to certain rules. When using this number, the number "0" is not needed. At that time, a scholar of the Roman Empire discovered the symbol "0" from Indian notation. He found it very convenient to use "0" for mathematical operation, and he was very happy. He also introduced the Indian method of "0" to everyone. After a while, it was known by the pope at that time. At that time, it was the Middle Ages in Europe. The power of the church was very strong, and the power of the pope far exceeded that of the emperor. The Pope was very angry. He rebuked that the sacred number was created by God, and there was no such monster as "0" in the number created by God. Anyone who wants to introduce now is blasphemous! So the Pope ordered the scholar to be arrested and tortured, and his ten fingers were tightly clamped with a clamp, so that his hand was disabled and he could no longer write with a pen. In this way, "0" was banned by the ignorant and cruel Pope. However, although the use of "0" is forbidden, Roman mathematicians still use "0" secretly in mathematical research regardless of the ban, and still make a lot of mathematical contributions with "0". Later, "0" was finally widely used in Europe, but Roman numerals were gradually eliminated. Children, do you know the story of Gauss, a mathematical genius, when he was a child? When Gauss was in elementary school, once after the teacher taught addition, because the teacher wanted to have a rest, he came up with a topic for students to calculate. The topic is:1+2+3+...+97+98+99+100 =? The teacher is thinking, now the children must start class! I used this as an excuse to go out, but Gauss stopped me! ! It turns out that Gauss has worked it out. Little friend, do you know how he did it? Gauss told us how he worked it out: add 1 to 100, and add 100 to 1, adding two lines. That is to say:1+2+3+4+...+96+97+98+99+100+99+98+97+96+...+4+3+2+65448./kloc- 5050 >； Since then, the learning process of Gauss Elementary School has already surpassed other students, which laid the foundation for his future mathematics and made him a mathematical genius! In daily life, mathematics is everywhere, such as buying and selling vegetables, calculating how much money ... here is a short story, a story between numbers. One day, when the digital cards were having lunch together, the youngest one spoke. Brother 0 said, "Let's take some photos together. What do you think? " 0' s brothers and sisters said in unison, "Good." Brother 8 said, "Brother 0' s idea is really good. I will be a good person once. Shall I provide camera and film for Brother 8? " Old four said, "starling, yes, it's just a little troublesome." Better use my digital camera. That's settled. "So, they got busy. Finally, they helped them shoot, and immediately sent the digital camera to the print shop. The computer sister tried to ask them for money, but who paid for it? They stared at each other one after another. This is what the computer sister said, "A ***5 yuan, a * * * eleven brothers and sisters, how much does a person pay on average? "Among the eleven of them, Liu is the cleverest, and this time it is the first to work out the result. Do you know how it is worked out? One day, the Tang Priest told his disciples Wukong, Bajie and Friar Sand to go to Huaguoshan to pick peaches. Before long, the three disciples returned happily after picking peaches. Tang Priest and his disciples asked: How many peaches did each of you pick? Bajie said with a silly smile, Master, let me test you. Each of us took the same amount of money. There are less than 65,438+000 peaches in my basket. If we count three peaches, there are 1 peach left in the end. Do the math. How many did each of us choose? Friar Sand said mysteriously, Master, I will test you, too. If there are four peaches in my basket, there is 1 left in the end. Do the math. How many did each of us choose? Wukong smiled and said, Master, I'll test you, too. If there are five peaches in my basket, there will be 1 in the end. Do the math. How many shall we each choose? Tang Priest quickly said the number of peaches he had picked. Do you know how many peaches they each picked? About 1500 years ago, European mathematicians did not know how to use "0". They use Roman numerals. Roman numerals are symbols representing numbers, which are combined to represent different numbers according to certain rules. When using this number, the number "0" is not needed. At that time, a scholar of the Roman Empire discovered the symbol "0" from Indian notation. He found it very convenient to use "0" for mathematical operation, and he was very happy. He also introduced the Indian method of "0" to everyone. After a while, it was known by the pope at that time. At that time, it was the Middle Ages in Europe. The power of the church was very strong, and the power of the pope far exceeded that of the emperor. The Pope was very angry. He rebuked that the sacred number was created by God, and there was no such monster as "0" in the number created by God. Anyone who wants to introduce now is blasphemous! So the Pope ordered the scholar to be arrested and tortured, and his ten fingers were tightly clamped with a clamp, so that his hand was disabled and he could no longer write with a pen. In this way, "0" was banned by the ignorant and cruel Pope. However, although the use of "0" is forbidden, Roman mathematicians still use "0" secretly in mathematical research regardless of the ban, and still make a lot of mathematical contributions with "0". Later, "0" was finally widely used in Europe, but Roman numerals were gradually eliminated. Children, do you know the story of Gauss, a mathematical genius, when he was a child? When Gauss was in elementary school, once after the teacher taught addition, because the teacher wanted to have a rest, he came up with a topic for students to calculate. The topic is:1+2+3+...+97+98+99+100 =? The teacher is thinking, now the children must start class! I used this as an excuse to go out, but Gauss stopped me! ! It turns out that Gauss has worked it out. Little friend, do you know how he did it? Gauss told us how he worked it out: add 1 to 100, and add 100 to 1, adding two lines. That is to say:1+2+3+4+...+96+97+98+99+100+99+98+97+96+...+4+3+2+65448./kloc- 5050 >； Since then, the learning process of Gauss Elementary School has already surpassed other students, which laid the foundation for his future mathematics and made him a mathematical genius! In daily life, mathematics is everywhere, such as buying and selling vegetables, calculating how much money ... here is a short story, a story between numbers. One day, when the digital cards were having lunch together, the youngest one spoke. Brother 0 said, "Let's take some photos together. what do you think? "0' s brothers and sisters said in unison," Good. " Brother 8 said, "Brother 0' s idea is really good. I will be a good person once. Shall I provide camera and film for Brother 8? " Old four said, "starling, yes, it's just a little troublesome." Better use my digital camera. That's settled. "So, they got busy. Finally, they helped them shoot, and immediately sent the digital camera to the print shop. The computer sister tried to ask them for money, but who paid for it? They stared at each other one after another. This is what the computer sister said, "A ***5 yuan, a * * * eleven brothers and sisters, how much does a person pay on average? "Among the eleven of them, Liu is the cleverest, and this time it is the first to work out the result. Do you know how it is worked out? One day, the Tang Priest told his disciples Wukong, Bajie and Friar Sand to go to Huaguoshan to pick peaches. Before long, the three disciples returned happily after picking peaches. Tang Priest and his disciples asked: How many peaches did each of you pick? Bajie said with a silly smile, Master, let me test you. Each of us took the same amount of money. There are less than 65,438+000 peaches in my basket. If we count three peaches, there are 1 peach left in the end. Do the math. How many did each of us choose? Friar Sand said mysteriously, Master, I will test you, too. If there are four peaches in my basket, there is 1 left in the end. Do the math. How many did each of us choose? Wukong smiled and said, Master, I'll test you, too. If there are five peaches in my basket, there will be 1 in the end. Do the math. How many shall we each choose? Tang Priest quickly said the number of peaches he had picked. Do you know how many peaches they each picked? Give life to numbers. Children, when you gently open the math book, do you see the smiling faces of numbers? Huh? How can numbers be alive? Of course it's alive! They all have different personalities. You see, "1" is so arrogant. I always think I am the tallest and my back is always straight. He can divide all the numbers exactly, but he can't be divided by other numbers except himself. He is really an overbearing general. But "2" is very kind, so he and his multiple have become good friends. Ever heard of what a prime number is? These people are a little different in the digital world. They are stubborn, entangled with each other, hung on a sieve, inseparable and stuck together forever. Numbers have different personalities anyway. Therefore, we can't ignore their lives. It is said that digital people often organize parties. This kind of party depends on different purposes and times, and the same number of people can attend different kinds of parties. When you hear "set of natural numbers", all natural numbers will gather together, but when you hear "set of integers", the numbers that have just gathered in the natural number team will follow the integer team. Who is the real prince? " Prince! "The king of the animal kingdom lost a son 10 years ago, so ministers began to look around for the prince from a long time ago. Because the king is old, his memory gradually declines. The more so, the more he wants to see the prince. " Axe, my axe, I miss you so much that I can't sleep. ""Before I die, can I have a look at my son ... Ministers look for the old king everywhere and tell everyone: "Our prince has three characteristics: first, he walks on four feet; Second, long hair all over; Third, it is very powerful. If anyone sees the prince, please contact us immediately. "When the tiger heard this, he felt hairy all over and thought," Isn't this talking about me? "? Yes, I'm Wang Zi. "So the tiger ran to the ministers. "I am a prince." Everyone looks at the tiger. It can walk on four feet, and its long hair flutters with the wind. Not only that, it is also very strong, and the little rabbit who watched it was kicked by him and immediately fainted. Ministers looked at the tiger and nodded. At this time, there was a quick cry: "Wait!" I saw a fox with a crooked mouth coming. "I am a prince." The fox jumped barefoot, showing off his shiny silver hair and saying, "Is it just strength?" Real power comes from wisdom! It is because I am smart that I have the words' as smart as a fox'. "After listening to the fox, ministers nodding. Ministers can't decide who is Prince Akers. They intend to report to the king. When the king heard the news of finding the prince, he was so happy that he ran out at once. But the tiger and the fox are arguing about who is the prince. At first, it was just a quarrel, but later it simply scuffled and bit each other. The king looked at the tiger and fox who were beaten to death, and the smile on his face suddenly disappeared. "Once upon a time, lovely children became like this ..." The king was very sad. In fact, they are all children of the king. The king was silent for a long time, then said, "My son has another characteristic. People who love to fight are not my children. " Hearing this sentence, the tiger and fox, which had been torn together, stopped at once. The king added, "The prince I am looking for does not exist. Stop looking for the prince. Ministers have an X-shaped crown in their hands. At first, this crown was given to the prince. When the king said this, the ministers stood where they were. The king is gone. " The axe is gone, the axe is gone ... "The king's sigh echoed in the distance.