Lesson 23 Review

The following are areas of squares.

Match the following areas to the side lengths.

• Side length:

  2 feet

• Side length:

  4 feet

• Side length:

  9 feet

• Side length:

  5 feet

Answer explanation

Use a square root to go from area to side length of a square!

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Answer explanation

The edge of a cube CANNOT be a negative number!

Answer explanation

The length of a playground CANNOT be negative!

You need to SQUARE ROOT, not divide by 2! Those are not the same thing!

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Answer explanation

Make sure you are using the CUBE root!

Cubing positive and negative numbers do NOT give the same result!

Tags

CCSS.6.G.A.4

Tags

CCSS.6.G.A.4