The tenth place is the one just to the right of the 0. This means that we have to look at the hundreths place which is 2 places to the right of the 0. If the number is greater than or equal to 5 then we round up. The number in the hundreths place is 7, which is above 5 we round the tenths place up to 8.
We found the factors and prime factorization of 9 and 12. The biggest common factor number is the GCF number. So the greatest common factor 9 and 12 is 3.
