Real Numbers Review

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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 fraction of two integers. Its decimal representation is non-repeating and non-terminating.

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What is a rational number?

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

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What is a perfect square?

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A perfect square is a number that can be expressed as the square of an integer. For example, 1, 4, 9, 16, and 25 are perfect squares.

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What is the square root of 25?

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The square root of 25 is 5, which is a rational number.

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What is the decimal representation of an irrational number?

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The decimal representation of an irrational number is non-repeating and non-terminating, such as 3.14159... (the value of π).

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What is the definition of an integer?

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An integer is a whole number that can be positive, negative, or zero, but cannot be a fraction or decimal.