DMS 8th grade Unit 1 Review

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.

Paula is framing a  square garden with an area of 200 ft². In order to frame the garden Paula will need to

find the SIDE LENGTH on one side. 

Which answer choice is the closest to the length of one side, rounded to the nearest tenths place?

• 14.1

• 11.2

• 20.7

• 50.4

Mr. Woodside is building a garden outside of Walker-Grant Middle School. He has enough fertilizer to cover 121 square feet. If Mr. Woodside wants to make a square garden, what should the length of each side be? (Hint: Side length? Find Square Root!!)

• 12ft

• 121ft

• 11ft

• 13ft

Point B could represent which of the following numbers?

• √24
• √30
• √35
• √42

Which number is an IRRATIONAL NUMBER? (Hint: Which one is NOT a perfect square?)

Which of the following statements is correct?

• The set of Integers DOES NOT contain any Real numbers

• The set of Irrational numbers DOES NOT contain any Natural numbers

• The set of Real numbers DOES NOT contain any Irrational numbers

• The set of Rational numbers DOES NOT contain any Whole numbers

Which of the following is a RATIONAL NUMBER ? 

• .211232112421125. . . .

  because "..." means it goes on and on

• π

  because Pi goes on and on

Which of the following numbers is IRRATIONAL?

• √8

  because it's not a perfect square

• ¾

  because it is a fraction

• 2

  because it is a whole number

• -1.325

  because it's negative

Set Q and Set Z are subsets of the real number system.

Q = {rational numbers}

Z = {integers}

Which Venn diagram best represents the relationship between Set Q and Set Z?

• 
• 
• 
• 

Is this written in scientific notation?

• Yes, it is in scientific notation because it has x 10

• No, it's not in scientific notation because it should be 3.4095 NOT 34.095