Numbers refer to the position of each number in a number. The number of digits in the integer part starts from the right, and every four digits are one level. Each level includes one digit, ten digits, hundred digits and thousand digits, indicating how many ones there are.
Tens of thousands include tens of thousands, hundreds of thousands, millions and tens of millions, indicating how many tens of thousands there are; Billions include hundreds of millions, billions, tens of billions and hundreds of billions, indicating that billions ... Decimal numbers are deciles, percentiles and thousandths from left to right ... indicating tenths, percentiles and thousandths.
The number of digits of a natural number is called the number of digits. For example, the number 9 contains only one number, so 9 is a number; Five digits 12345 contains five digits: one, ten, hundred, thousand and ten thousand. One (a), ten, hundred, thousand, ten thousand, one hundred thousand, one million (trillion), ten million, one billion, ten billion, one hundred billion ... are all units of counting.
The decimal counting method is characterized by "full 10 into one". In other words, every 10 unit forms a higher unit adjacent to it. That is, 10 is called "ten", 10 is called "hundred", 10 is called "thousand" and 10 is called "ten thousand".
The benefits of studying mathematics are as follows:
1. Mathematics can make your brain smarter and increase the rigor of thinking.
2. Mathematics is a basic subject. If you can't learn math well, you can't learn anything well. No matter what you want to learn, you must have a foundation in mathematics.
3. Mathematical knowledge runs through our life, which can be said to be everywhere. We live with these mathematical knowledge unconsciously every day.
Mathematics is the study of all quantitative relations and spatial position relations in the world. It can be said that without mathematics, nothing can move.