What are the rules for the comparison of onedigit numbers?
The comparison of onedigit numbers depends on their values. The value of a number is found by adding the place values of the digits. The value of a onedigit number is its face or place value. The place value or face value of the digit of a single digit number is the same.
We know:
6 > 4 8 > 5 
4 < 6 8 < 9 
If we compare onedigit numbers, the number which has the greater value (face value or place value) is greater than the number which has the smaller value, as shown above.
We also know: 8 < 10 or 10 > 8
The value of 10 is greater than 8.
The value of 8 is lesser than 10.
Similarly, 7 > 3 or 3 < 7 The value of 7 is greater than 3.
The value of 3 is lesser than 7.
Arranging 1digit numbers:
(i) Arranging the numbers 7, 5, 1, 6, 9 in ascending order:
The numbers are arranged in ascending order 1, 5, 6, 7, 9.
(ii) Arranging the numbers 4, 8, 2, 5, 6 in descending order:
The numbers are arranged in descending order 8, 6, 5, 4, 2.
Thus, any twodigit number is always greater than a onedigit number.
10 > 9 , 12 > 7 , 11 > 5 , etc.
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