Mod 2 Real # Review

Front

What is the formula for the area of a square?

Back

The area of a square is calculated using the formula: Area = side × side or Area = side².

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If the area of a square is 81 cm², what is the length of one side?

Back

The length of one side is 9 cm, since 9 × 9 = 81.

Front

What does it mean for a number to be a square root?

Back

A square root of a number is a value that, when multiplied by itself, gives the original number. For example, the square root of 25 is 5 because 5 × 5 = 25.

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Back

The solution set is {5, -5}.

Front

How do you convert a fraction to a decimal?

Back

To convert a fraction to a decimal, divide the numerator by the denominator. For example, 6/11 = 0.545454... .

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Back

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Front

What is the definition of a perfect square?

Back

A perfect square is an integer that is the square of another integer. For example, 1, 4, 9, and 16 are perfect squares.

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Back

The solutions are x = 9 and x = -9.

Front

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.