How to express the number of people in a tour group

Single digits, tens digits, hundreds digits, thousands digits. There are four ways to represent the number of people in a tour group, including: single-digit representation: each number represents one person, for example, if the number of people is 32, it means there are 32 people; tens-digit representation: use two Numbers represent the number of people. For example, if the number of people is 150, it is called 15 tens. Hundreds digit representation: Use three numbers to represent the number of people. For example, if the number of people is 420, it is called 4 hundreds. Thousands of digits represent the number of people. Method: Use four numbers to express the number of people. For example, if the number of people is 2800, it is called 2800 people.