Square Root Arithmetic

Which number is the square root of 324?

• 18²

• 18

• √18

• 18/2

• √x = 7
• x² = 7
• 49² = x
• √49 = x

Mr. Jarowski is hanging a square picture frame that has an area of 169 cm². Find the side length of the frame.

• 12 cm

• 13 cm

• 13 in

• 16 cm

• 25² = x
• x² = 5
• x² = 25
• √25 = x²

The area of the square pool on Mr. Carr's vacation was 256 ft². How long was one side of the pool?

• 17 ft

• 18 ft

• 16 ft

• 15 ft

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

• 18.5

• 19

• 19.5

• 20

What is the square root of 81?

• 3

• 162

• 6561

• 9

What number squared is 9?

• 9

• 18

• 3

• 81

169

• Is a perfect square.

• Is not a perfect square.

Which of the following is a perfect square?

• 39

• 50

• 24

• 81