1 has different meanings. "Number" refers to the position occupied by each digit of a number. For example, starting from the right end of the number sequence table, the first number is "single digits", the second number is "ten digits", and so on; "Number of digits" refers to the number of digits of a natural number, such as 458. This number consists of three digits, and each digit accounts for one digit, so we call it three digits.

2. The meaning is different. "Numbers" means numerical values. The same number, because the number of digits is different, represents different values; "Number of digits" indicates the number of digits.

Extended data:

Differences between numbers and numbers and counting units

Digits: digits; 123 has three digits.

Number of digits: the position of the digital station, where 1 takes 100 digits, 2 takes 10 digits and 3 takes/kloc-0 digits.

Digital scale: it is a reading method for people to remember Arabic numerals. On the basis of numerical system (numerical order), read and write numbers according to the principle of three-digit or four-digit grading. Usually, in the writing of Arabic numerals, decimal points or spaces are used as the marks of each number level, and the numbers are separated from right to left, such as 3,000,003,003,000; 271500 0000 2.7 billion150,000

Baidu Encyclopedia-Numbers

Baidu Encyclopedia-Numbers