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.

Front

What is the approximate value of √150?

Back

Between 12 & 13 but closer to 12.

Front

What is the approximate value of √139?

Back

Between 11 & 12 but closer to 12.

Front

What is the approximate value of √50?

Back

Approximately 7.07, but can be estimated as A (between 7 and 8).

Front

What is the approximate value of √124?

Back

Between 11 & 12 but closer to 12.

Front

What is the approximate value of √67?

Back

Between 8 & 9 but closer to 8.

Front

How do you estimate square roots?

Back

Find two perfect squares between which the number lies, then determine which perfect square it is closer to.

Front

What are perfect squares?

Back

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

Front

What is the square root of 64?

Back

8, because 8 x 8 = 64.

Front

What is the square root of 81?

Back

9, because 9 x 9 = 81.