Estimating Square Roots

Front

What is the square root of a number?

Back

The square root of a number is a value that, when multiplied by itself, gives the original number.

Front

How do you estimate the square root of a number?

Back

To estimate the square root, find two perfect squares between which the number lies, then interpolate to find a value.

Front

What is the square root of 144?

Back

12

Front

What is the square root of 169?

Back

13

Front

What is the approximate square root of 50 to the tenths place?

Back

7.1

Front

What is the approximate square root of 62 to the tenths place?

Back

7.9

Front

What is the approximate square root of 116 to the tenths place?

Back

10.8

Front

What is the approximate square root of 145 to the tenths place?

Back

12.0 or 12

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

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

Back

Square your estimated value and see if it is close to the original number.