How to compare the size of two numbers?

How to compare the size of two numbers?

1、 Integer, look at the digits
1. The number of digits is different
2. The number of digits is the same. From the highest position, the number on the digit is larger than that on the digit
2、 Decimals
1. Compare the integer part first, and the method is the same as above
2. If the integral part is the same, compare the decimal part from the tenth place
3、 Score
1. If the denominator is the same, the larger the numerator is
2. If the molecules are the same, the larger ones are smaller
3. Different denominator, first general division, and then according to the same denominator method of comparison