First, for a number: reading is to write this number in words; Writing is to write numbers with mathematical symbols. To put it simply: reading is a word and writing is a number.

Second, the concept is different. Reading means that numbers should be written in capital letters, such as capital letters 1, 2, 3, 4, 5, 6, 7, 8, 9. For example: 68, pronunciation: 68. Writing refers to writing with lowercase Arabic numerals, such as the numbers 1, 2, 3, 4, 5, 6, 7, 8, 9. For example: 74, it says: 74. Secondly, the writing is different: "reading" is a capital number and "writing" is an Arabic number, that is, how to record it.

Third, according to the number of lines from right to left, take four bits as a level or three bits as a paragraph, and then read from left to right. This reading method is called hierarchical reading method or segmented reading method, and is usually used to read decimal integers. Numbers with more than four digits are graded by four digits from right to left, and then the numbers of each level and their level names are read from a higher level.

4. When writing numbers within 10,000, write them in numerical order from top to bottom, with thousands written on thousands, hundreds written on hundreds, tens written on tens, and several written on several digits. If there is no one in the middle or at the end, write 0 on that number.