Perfect Squares and Square Roots

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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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CCSS.6.EE.A.1

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What is the square root of a number?

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The 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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CCSS.8.EE.A.2

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Which of the following is a perfect square: 10, 15, 25, 30?

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25 is a perfect square because it is 5 x 5.

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CCSS.6.EE.A.1