Approximating Square Roots

Front

What is 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 9 is 3, because 3 x 3 = 9.

Front

What is the symbol for square root?

Back

Front

Back

Front

How do you estimate the square root of a number?

Back

Front

What are perfect squares?

Back

Perfect squares are numbers that are the square of an integer. Examples include 1, 4, 9, 16, 25, etc.

Front

What is the square root of 16?

Back

The square root of 16 is 4, because 4 x 4 = 16.

Front

What is the square root of 49?

Back

The square root of 49 is 7, because 7 x 7 = 49.

Front

Back

Front

What is the relationship between square roots and exponents?

Back

Front

How can you check if your square root approximation is correct?

Back

You can check your approximation by squaring your estimated value and seeing if it is close to the original number.