Which number is larger 0.802 or 0.83

When you are seeing which number is bigger first you look at the first digit
0.83  or 0.802
   ^8         ^8

If they equal the same, look at the second digit
0.83 or 0.802
     ^3       ^0

3 is greater than 0

0.83 is larger 

you can also look at it this way:
0.83 = 0.830
What is bigger
0.802 or 0.830?
0.83 is bigger