ParaPro Assesment Practice Exam

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Which number is classified as an integer?

4.5
0
-3.14
1/2

The correct answer is: 0

An integer is defined as a whole number that can be either positive, negative, or zero, and it does not include any fractions or decimal points. In this context, the number zero is classified as an integer because it satisfies the criteria of being a whole number without any fractional or decimal component. It holds significance in mathematics as the neutral element for addition and serves as a boundary between positive and negative integers. The other choices feature either decimal numbers or fractions, which do not meet the definition of an integer. For instance, 4.5 is a decimal, -3.14 is also a decimal (and negative), and 1/2 is a fraction. Thus, only zero fits the classification of an integer among the given options.