Real Number System

Front

What are integers?

Back

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

Front

Which of the following is NOT a natural number? 12, 3,000, 5, 0

Back

0

Front

What is a subset of the integers?

Back

Whole numbers.

Front

What type of number is Pi?

Back

Irrational number.

Front

Are irrational numbers real numbers?

Back

Always.

Front

What are natural numbers?

Back

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

Front

What are whole numbers?

Back

The set of non-negative integers (0, 1, 2, 3, ...).

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 simple fraction; they have non-repeating, non-terminating decimal expansions.

Front

Is 1.5 a rational number?

Back

Yes, because it can be expressed as 3/2.