Question

Classify -21.78

Answer 1

[AI-generated answer — Explain Bot]

To classify -21.78, we need to determine its classification based on its properties.

- According to the number line, -21.78 falls to the left of zero, which indicates it is a negative number.

- -21.78 is a decimal number, as it contains a decimal point.

- It is not a whole number, as it is not an integer without any decimal places.

- It is also not an irrational number, as it is a terminating decimal (it does not continue infinitely).

- -21.78 is a real number, as it can exist on the number line.

Therefore, based on these properties, we can classify -21.78 as a negative, real, decimal number.