Estimating Square Roots

Front

What is a perfect square?

Back

A perfect square is a number that can be expressed as the square of an integer. For example, 1, 4, 9, 16, and 25 are perfect squares.

Front

What is a non-perfect square?

Back

A non-perfect square is a number that cannot be expressed as the square of an integer. For example, 2, 3, 5, and 15 are non-perfect squares.

Front

Estimate the square root of 15. Which number is the best estimation?

Back

3.9

Front

Back

Non-Perfect Square Root

Front

Back

5 and 6

Front

Back

7 and 8

Front

Back

Perfect Square

Front

How do you estimate the square root of a non-perfect square?

Back

To estimate the square root of a non-perfect square, find the two perfect squares it lies between and average their square roots.

Front

What is the square root of 16?

Back

4

Front

What is the square root of 25?

Back

5