Estimating Square Roots

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What is a square root?

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A square root of a number is a value that, when multiplied by itself, gives the original number. For example, the square root of 9 is 3, because 3 x 3 = 9.

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What is the symbol for square root?

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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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How do you estimate the square root of a number?

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Front

Which of the following is NOT a perfect square: 196, 169, 121, 132?

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132 is NOT a perfect square.

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How can you determine if a number is a perfect square?

Back

A number is a perfect square if its square root is an integer. You can check this by calculating the square root and seeing if it is a whole number.