Unit 1 Pretest

• Both numbers are rational because 16 is a perfect square and a perfect cube.

• Both numbers irrational because the decimal form of each number does not repeat or terminate.

Answer explanation

(8.NR.1.1) Which THREE statements are TRUE?

• 
• 
• 
• 

(8.NR.2.1) Chandler and Grace simplified an expression involving exponents. Their work is shown.

• Both students incorrectly applied the power of a

  quotient for the base of 3.

• Chandler applied the power of a quotient for the base of 3 first, while Grace applied it last.

• Grace divided the exponents of the base 3 when the exponents should have been subtracted.

• Chandler divided the exponents of the base 3 when the exponents should have been subtracted.

(8.NR.2.2) Which equation has only two solutions: x = 3 and x = -3?

• 4

• -2

• -4