FTCE General Knowledge Math Practice Test

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What category do counting numbers and zero belong to?

Integers
Natural numbers
Whole numbers
Rational numbers

The correct answer is: Whole numbers

Counting numbers and zero belong to the category of whole numbers. Whole numbers include all the natural numbers (which start from 1 and go up) along with zero; therefore, this set encompasses 0, 1, 2, 3, and so forth. On the other hand, natural numbers traditionally refer to the positive counting numbers starting from 1, leaving out zero. Integers include both positive and negative whole numbers, as well as zero, making it a broader category. Rational numbers are numbers that can be expressed as a quotient of two integers, which can include whole numbers, but also fractions and negative numbers. Thus, the correct classification for counting numbers and zero is whole numbers, as it includes both 0 and the positive counting numbers together in a single group.