The earliest music score in the world appeared on the papyrus scroll in Ammers, Egypt. In AD 1858, an Englishman named Henry Lint found an ancient papyrus in the ruins of Tiber, Egypt, and immediately restored this priceless treasure. It took 19 years to translate ancient Egyptian into papyrus. Now this world's oldest math book is treasured in the British Museum in London.
In Ammers's cursive scrolls, we see the general notation of scores four thousand years ago. At that time, the Egyptians had mastered the general notation of single fractions-fractions with the numerator 1, and regarded single fractions as the reciprocal of integers. This understanding of the Egyptians and the statistics of individual scores are extraordinary. It tells people that numbers not only have integers, but also their reciprocal-single fraction.
After all, a score is not just a single score. In the 5th century BC, China began to recognize the quotient of dividing two integers as a fraction, which is the basis of the present concept of fraction. In this understanding, divisor also means score, dividend is placed on the divisor and quotient is placed on the top. For example, if it is a false score, the integer part of the false score is placed above the score, not to the left.
/kloc-In the late 20th century, in the works of Arabs, a short horizontal line was used to separate the numerator and denominator for the first time, which can be said to be the earliest fractional line in the world. /kloc-At the beginning of the 3rd century, the Italian mathematician Fibonacci introduced Arabic numerals into his works, and also introduced the notation of fractions into Europe.
During the Western Han Dynasty, Zhang Cang, Geng Shouchang and other scholars sorted out and deleted the mathematical knowledge since the Qin Dynasty and compiled Nine Arithmetic Chapters. In the chapter of Tian Fang, a mathematical classic, the complete score algorithm proposed was only popular in Europe in about15th century. Europeans generally believe that this algorithm originated in India. In fact, India began to have fractional arithmetic in Brahman Gupta's works in the 7th century, and these laws are the same as those introduced in the Nine Chapters of Arithmetic. Liu Hui's Notes on Arithmetic in Nine Chapters was written by Wei Jingyuan in 263, so even compared with Liu Hui's time, India is about 400 years behind us.
Percentage is the knowledge that is often used in daily production and life. More than 200 years ago, the Swiss mathematician Euler said in his book General Arithmetic that it is impossible to divide a 7-meter-long rope into three equal parts because there is no suitable number to represent it. If we divide it into three equal parts, each part is 7/3 meters. Like 7/3 is a new number, which we call a fraction. Then, people invented the percentage based on the score and 100.
Percent is a fraction with 100 as the denominator, which is mathematically expressed as "%",and "what percentage" is usually written in the article. Percent is different from multiple, which can indicate both the increase and decrease of quantity.
per cent