Simply Square Roots

Which number is closest to the approximate value of √380?

• 18.5

• 19

• 19.5

• 20

What is the square root of 100?

• 10

• 200

• 50

• 1000

What is the square root of 36?

• 4

• 6

• 18

• 1296

What is the square root of 81?

• 3

• 162

• 6561

• 9

169

• Is a perfect square.

• Is not a perfect square.

Which of the following is a perfect square?

• 39

• 50

• 24

• 81

What is the square root of 289?

• 13

• 140

• 17

• 18

What is the square root of 324?

• 16

• 17

• 18

• 19

If I know the area of a square, how do I find the side length?

• I square the area.

• I divide the area by 2.

• I take the square root of the area.

• I divide the area by 4.

A perfect square is a number whose square root is ___________.

• even

• a never-ending

  (non-terminating) decimal

• rational

• odd