10 one is ten, 10 ten is one hundred, 100 has 100 one-
2, reading and writing numbers are from a height, reading Chinese characters, writing numbers:
3. From the right, the first number means several ones, the second number means dozens, and the third number means hundreds.
4. The maximum number is 9, the minimum number is 10, the maximum number is 99 and the minimum number is 100.
The rule of writing numbers is to start from the right. The first number is one and the second number is ten. There are 1 ten tens of writing 1, two tens of writing 2, and several tens of writing a few. Both reading and writing start from a high position. The first-year students of mathematics mainly study the understanding and writing of numbers within 20. After mastering this rule, it will be relatively simple to learn to read and write large numbers in the future.