Answer:
Whole, integer, rational
Explanation:
Natural numbers are the numbers you learn in kindergarten or elementary. For example 1, 2, 3... but not 0. This is considered somewhat of a complex number to work with.
Whole numbers are the numbers that are natural numbers but include 0. It starts at 0 and continues: 0, 1, 2, 3... They are not negative numbers.
Integers are whole numbers but they include the negative side. For example, -1, -2, -3... They include 0 as well.
Rational numbers are numbers that can be converted to a fraction. For example 0.75 = 3/4.
Irrational numbers are numbers that cannot be converted to a fraction and they are decimals. For example, a famous irrational number is pi.
Therefore, the real numbers that 0 classifies as are whole numbers, integers, and rational numbers (0/1).