Katie said, "negative numbers are integers." What was her error?

I don't see an error.

http://www.mathsisfun.com/whole-numbers.html

Katie said negative numbers are intergers. What was her error

These numbers -2 1/2, -1.3, and -2.89 are not negative numbers. That is her error

Whole numbers are integers not just negatives

Katie doesnt have an error because negative numbers are integers which are rational numbers 😊

Katie's error lies in her statement that "negative numbers are integers." The correct statement is that negative numbers are a subset of integers, but not all negative numbers are integers.

To understand Katie's error, we need to have a basic understanding of number systems. The set of integers includes all whole numbers, both positive and negative, as well as zero. In symbols, we can represent the set of integers as {..., -3, -2, -1, 0, 1, 2, 3, ...}.

However, not all negative numbers are integers. Integers are considered whole numbers, and negative numbers are not considered whole. Negative numbers fall into a more inclusive number system known as the set of real numbers, which includes fractions, decimals, irrational numbers, and more.

So, to sum up, Katie's error is incorrectly stating that negative numbers are integers when they are part of a larger number system called the real numbers.