Hamilton's Math To Build On - copyright 1993

Square Roots

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* Square Roots

The square root of a number is best described by the question:

    What number has been squared to get the number under the square root symbol?
    The square root of 4, , is 2. That means that if 2 is squared, it will equal 4.
The key will find the square root of whatever is in the display on your calculator.

Every number has a square and a square root. Here are some examples of square roots:

The variables in the last three examples show another rule of math:

    The square root of a number squared is the number.
    For example: or = 2.

Square root practice: Find the square root for each of the following numbers.
Use the key. Round off to 4 decimal places.

     (1)  1             (7) 74.525 
     (2) 11             (8) 35 7/8
     (3) 54.5           (9) a^2 
     (4) 16 3/4        (10) b^2 
     (5) 400           (11) 144
     (6) 127           (12) 100
Answers.

On to Right Triangles

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