No, it is not.
The set of rational numbers includes the set of natural numbers but they are not the same. All natural numbers are rational, not all rational numbers are natural.
Yes - the set of integers is a subset of the set of rational numbers.
The Real numbers
It is the rational numbers.
No. A real number is only one number whereas the set of rational numbers has infinitely many numbers. However, the set of real numbers does contain the set of rational numbers.
No; there are infinitely many rational numbers.
Both rational numbers and integers are subsets of the set of real numbers.
The set of rational numbers is the union of the set of fractional numbers and the set of whole numbers.
They are called rational numbers. The set of rational numbers contains the opposites of its members.
The sum of any finite set of rational numbers is a rational number.
It is the set of Real numbers.