2. German mathematician kravis was the first to use points as decimal points.
"Tangram" is a jigsaw puzzle in ancient China. It consists of seven thin plates, which can be put together into a big square. The patterns spelled out are varied, and later spread abroad, called Tang Tu.
It is said that as early as 4500 years ago, our ancestors used notch to measure time.
6. China is the first country to use the rounding method.
7. Euclid's most famous work, The Elements of Geometry, is the foundation of European mathematics. It put forward five postulates and developed them into Euclidean geometry, which is widely regarded as the most successful textbook in history.
8. Zu Chongzhi, a mathematician, astronomer and physicist in the Southern Dynasties, ranked the value of pi in the seventh place.
9. Rudolph, a Dutch mathematician, calculated the 35th place of pi.
10 Archimedes, known as the "father of mechanics", has many mathematical works handed down from generation to generation. Archimedes once said: Give me a fulcrum and I can move the earth. This sentence tells us that we should have the courage to find this fulcrum and use it to find the truth.
1 1, zero. At a very early time, people thought that "1" was the beginning of "numerical character table", which further led to other numbers such as 2, 3, 4 and 5. The function of these figures is to count those physical objects, such as apples, bananas and pears. Only later, when there were no apples in the box, did I learn how to count the apples in the box.
12, digital system. Digital system is a way to deal with "how much". Different cultures have adopted different methods in different times, from the basic "1, 2,3, many" to the highly complex decimal notation used today.