Calculating Square Roots by Hand Overview

in MES Science4 years ago (edited)

In this video I recap on the steps of calculating square roots by hand and go over steps involved in calculating the square root of 512.3 (which I calculated in my example 3 video).


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Calculating Square Roots by Hand

Calculating Square Roots by Hand Overview.jpeg

Step by Step Overview

Earlier Videos I did these Examples:

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Step by Step Method:

Step 1: Write digits in pairs.

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Step 2: Start from first pair from the left: Find largest number when squared is less than pair. This is the first digit of the answer.

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Step 3: Multiply the first digit of answer by 2.

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Step 4: Subtract the number from step 3 from the first pair.

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Step 5: Bring the next pair down alongside the remainder

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Step 6: Now find a number such that when it is multiplied by a number composed of the number from step 3 and itself is the largest number less than the number from step 5.

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Step 7: Subtract 84 from 112 and bring down next pair.

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Step 8: Multiply the current answer by 2 and repeat above steps forever.

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