Reading means reading a number. Be sure to write Chinese characters and pay attention to the number of digits in each number. Numbers mean that when writing numbers, the numbers are arranged side by side in a line, and each number occupies a position. These positions are called numbers. Starting from the right end, the first place is the unit, the second place is the tenth place, the third place is the hundred places, the fourth place is the thousand places, and the fifth place is the ten thousand places, and so on. For example, 5 is read as 500 in a hundred miles and 8 is read as 8000 in a thousand miles.