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Approximating square roots

Teaching Transcript

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Let's approximate the square root of 19.

19 is between the perfect squares of 16 and 25

So we know that the square root of 19 will be between 4 and 5, maybe around 4.5 would be a good approximation

The correct answer is 4.36 so that was a good estimate

This math skill teaches how to estimate the square root of a number by identifying the two nearest perfect squares and estimating a value in between those square roots.

Skill Practice

Approximating square roots

Test your understanding of approximating square roots by practicing it! Work through the below exercises to use it in practice.