Answer and explanation:
1) Given : Circumference of Earth 
Circumference of Saturn 
To find : How many times greater is the circumference of Saturn than the circumference of Earth?
Solution :
Let x be the number of times greater is the circumference of Saturn than the circumference of Earth.
According to question,




Therefore, 9.124 times greater is the circumference of Saturn than the circumference of Earth.
2) Number 0.037854921
Estimate to the nearest hundredth.
The hundredth number is 3 and thousandth number is 7.
As thousandth number 7 is greater than 5.
So, hundredth number is added by 1 and rest became zero.
i.e. 
3) Compare the numbers
and 


As the denominator is same compare the numerator,
0.02<6 or 6>0.02
So, 
Therefore,
is greater than 