Types of Numbers

Front

What are whole numbers?

Back

The numbers starting with zero.

Front

Is -9 an integer?

Back

True

Front

Which of the following is an integer, but NOT a whole number? -9, 0, 27

Back

-9

Front

What is another name for natural numbers?

Back

Counting Numbers

Front

What are natural numbers?

Back

The set of positive integers starting from 1 (1, 2, 3, ...).

Front

What are integers?

Back

Whole numbers that can be positive, negative, or zero.

Front

What are rational numbers?

Back

Numbers that can be expressed as a fraction of two integers.

Front

What are irrational numbers?

Back

Numbers that cannot be expressed as a fraction, such as √2 or π.

Front

What is a repeating decimal?

Back

A decimal that has digits that repeat infinitely, like 0.333... or 1.666... .

Front

What is a terminating decimal?

Back

A decimal that has a finite number of digits, like 0.75 or 2.5.