why 0.1 is larger than 0.09.
0.1 = 1/10 ..... 0.09 = 9/100
Get a common denominator
1/10 = 10/100
So......
0.1 > 0.09 because
10/100 > 9/100
If you turn then into fractions, they would be 9/100 and 10/100. So you know that .1 is 1/100 bigger than .09.