-6.7 is a rational number. A rational # can be expressed as the ratio of two integers and that # can be written as -67/10
It is not an integer. The integers consist of all whole #s, negative, positive, and zero. ...-3, -2. -1, 0, 1, 2, 3....
It is not a whole #. Whole # have no decimal or fraction part.
It is not a natural number. The natural numbers are the counting #s: 0, 1, 2, 3 ....
Mark M.
09/08/15