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Comparing Multiple Digit of Numbers

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Comparing Multiple Digit of Numbers:

A. Comparing numbers when the total number of digits is different:

If the total number of digits in two given numbers is different. One with more digits is the greater number and the number with the least number of digits is the smallest number. 
Example, Consider numbers: 2853, 7691, 9999, 12002, 124. 
12002 is the largest number and 124 is the smallest number.

B. Comparing numbers when the total number of digits is same:

If the number of digits in two given numbers is same, then first compare the digits at the leftmost place in both the numbers. If they are equal in value then compare the second digits from the left. if the second digits from left are equal then compare the third digits from the left. Continue until you come across unequal digits at the corresponding places. 

For example, which is greater, 4875 or 4542?
Here, the numbers have the same number of digits. Further, the digits at the thousand's place is same in both. We move to the next digit, which is to the digit at the hundred's place. The digit at the hundred's place is greater in 4875 than in 4542.
Therefore, 4875 is greater than 4542.

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