No.
4/1 is an integer and there is no sensible way of expressing that as a mixed number.
Oh, dude, an integer is just a fancy word for a whole number. So, like, 1 over 2 is a fraction, not a whole number. It's like saying you have half a pizza instead of a full one. So, nope, 1 over 2 is not an integer.
An integer is any whole number (1,2,3,-1,-2,-3, etc.). -3.12's closest integer is -3.
integers are counting numbers (1...2...3...etc.) and their opposites (-1...-2...-3...etc.) and 0. so no 16.2 is not an integer.
Any integer can be turned into a fraction by putting it over 1. For instance 3/1=3
Put a 1 over it. The reciprocal of 3 is 1/3
No, 1/3 is not a natural number or even an integer. 1/3 is an irrational fraction and a real number.
15/3 = 5 5 is an integer.
Yes. All mixed numbers can be converted into improper fractions where there is one integer over another (non-zero) integer which is the form of a rational number. 3 1/4 = (3×4+1)/4 = 13/4
No. If you are asked for "simplest form", it is usually assumed that the result should be an integer over an integer - so you should leave it as 2 / 3 in this case.
Yes. 6 over 2 is the same as 3, which is an integer.
No.
No.
a negative integer is -1,-2,-3 and so on, but not -2.5 or 0 a positive integer is 1, 2, 3 and so on but not 7.2 or 0
4/1 is an integer and there is no sensible way of expressing that as a mixed number.
Rational yes, integer no.