Real Number System

Front

What is a real number?

Back

A real number is any number that can be found on the number line, including both rational and irrational numbers.

Front

Define a natural number.

Back

Natural numbers are the set of positive integers starting from 1, used for counting (e.g., 1, 2, 3, ...).

Front

What is an irrational number?

Back

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Back

Front

What is a whole number?

Back

Whole numbers are all natural numbers including zero (e.g., 0, 1, 2, 3, ...).

Front

Classify the number 120.

Back

120 is a counting number, whole number, integer, rational number, and real number.

Front

What is a rational number?

Back

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Back

Front

What is the difference between integers and whole numbers?

Back

Integers include all whole numbers and their negative counterparts (e.g., -1, 0, 1, 2, ...), while whole numbers only include non-negative numbers (0, 1, 2, ...).

Front

Is 0 a natural number?

Back

No, 0 is not a natural number; natural numbers start from 1.