PERT Practice Test 2025 – Complete Guide for Exam Prep

The opposite of a positive integer is a negative integer. Positive integers are whole numbers greater than zero, such as 1, 2, and 3. By definition, the opposite value would be the corresponding negative whole numbers, which are -1, -2, and -3. Negative integers have values less than zero, directly opposing the positive integers on the number line. This principle of opposites is fundamental in mathematics, as it pertains to sign changes that result in mirrored values across zero.

In contrast, zero is neither a positive nor a negative integer, serving as the neutral point on the number line. Decimal numbers can also be positive or negative, but they are not considered whole numbers nor are they strictly opposites of positive integers in the same way. Complex numbers consist of a real part and an imaginary part, making them entirely distinct from the concept of positive and negative integers. Thus, the identification of negative integers as the opposite of positive integers is accurate and aligns with standard mathematical principles.