Square Roots and Cube Roots

The area of a square is 36 cm².  What is the length of one side?

• 6 cm
• 18 cm

Tags

CCSS.8.EE.A.2

The area of a square picture frame is 100 cm².  What is the perimeter of the frame?

• 25 cm
• 10 cm
• 40 cm
• 50 cm

Tags

CCSS.8.EE.A.2

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.

Tags

CCSS.8.EE.A.2

To find the square root of a number, you must divide it by 2.

• True
• False

Tags

CCSS.8.EE.A.2

To find the cube root of a number, you must divide it by 3.

• True
• False

Tags

CCSS.8.EE.A.2

x² = 121
What does x equal? Select all that apply.

• 121²

• -11

• 11

• 14,641

Tags

CCSS.8.EE.A.2

All the following are perfect squares EXCEPT for which one?

• 81
• 121
• 1000

• 225

Tags

CCSS.8.EE.A.2

All the following are perfect cubes EXCEPT for which one?

• 81
• 64

• 1000

• 125

Tags

CCSS.8.EE.A.2

The number 225 is...

• a perfect square.

• not a perfect square.

Tags

CCSS.8.EE.A.2

The number 27 is...

• a perfect square.

• not a perfect square.

Tags

CCSS.8.EE.A.2