Solution to

Square Root

Frame 5-25.

In some problems, you have a number and need to know what number

positive

squared equals that number. This is called "square root." For example,

five squared is twenty-five; therefore, the square root of twenty-five is five.

This is about the same as saying that the area of a square is 25 square

meters. What is the length of one side of the square?

The "square root" is the reversal of the square function.

The symbol for square root is

.

"The square root of 25" is written as

.

Another way of indicating square root is using "1/2" as the exponent

(power of 10). For example: 25 1/2 = 5.

See if you know the square roots of the following numbers.

a. 625

____________

b. 0004

____________

c. 1/81

____________

[Hint: Take a guess, then square your guess. Adjust your guess higher

or lower until you hit upon the answer.]

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MD0900

5-15

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