Rational numbers are numbers that can be expressed as quatients or fractions of two integers, with a numerator, p, and a denominator, q. The denominator of the fraction is always greater than zero.
Since q can be 1, you can think of every integer as a rational number.
a) 11
By dividing 11 by 1, you express the integer as a rational number.
b) 3
c) -4
Same as in a and b you can divide it by 1 to express it as a rational number
Since -4 is not a prime number like 11 and 3 you can also write it as: