Real Number System Flashcard

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What is the definition of a real number?

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

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What is a rational number?

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A rational number is any number that can be expressed as the quotient or fraction of two integers, where the denominator is not zero.

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What is an irrational number?

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An irrational number is a number that cannot be expressed as a simple fraction; its decimal representation goes on forever without repeating.

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What is the square root of a number?

Back

The square root of a number x is a number y such that y² = x.

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Front

What is the area of a square with side length 6?

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The area of a square is calculated as side length squared, so the area is 6² = 36.

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How do you find the square root of a number?

Back

To find the square root of a number, you can use a calculator or estimate by finding two perfect squares it lies between.