(8.NR .1.1) Which comparison of $$\sqrt[]{16}$$ and $$\sqrt[3]{16}$$ is correct?

The decimal form of $$\sqrt[3]{16}$$ is irrational because the number does not repeat or terminate. The decimal form of $$\sqrt[]{16}$$ is rational because the number terminates.

The decimal form of $$\sqrt[]{16}$$ is irrational because the number does not repeat or terminate. The decimal form of $$\sqrt[3]{16}$$ is rational because the number terminates.

( 8.NR .1.1) Frankie argues that the fraction $$\sqrt[]{20}$$ is a rational number because the square root of 20 is 10. Frankie believes that because 10 is a whole number, it is rational. Alejandro disagrees. He believes that $$\sqrt[]{20}$$ is a rational number because the square root falls between 4 and 5, and the decimal terminates. Which statement BEST describes who is correct?

Neither student is correct because $$\sqrt[]{20}$$ is an irrational.

Frankie is correct because the $$\sqrt[]{20}$$ is 10 which is a rational number.

Alejandro is correct because the $$\sqrt[]{20}$$ falls between 4 and 5 and the decimal terminates.

Both students are correct because $$\sqrt[]{20}$$ is a rational number.

Unit 1 Pretest

Authored by Denis Stuckey

Mathematics

8th Grade

CCSS covered

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MULTIPLE CHOICE QUESTION

5 mins • 10 pts

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

Tags

CCSS.8.NS.A.1

MULTIPLE CHOICE QUESTION

5 mins • 10 pts

MULTIPLE SELECT QUESTION

5 mins • 10 pts

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

Tags

CCSS.8.NS.A.1

CCSS.7.NS.A.2D

MULTIPLE CHOICE QUESTION

5 mins • 10 pts

Tags

CCSS.8.NS.A.2

MULTIPLE CHOICE QUESTION

5 mins • 10 pts

Tags

CCSS.8.NS.A.2

MULTIPLE CHOICE QUESTION

5 mins • 10 pts

Tags

CCSS.8.EE.A.1

MULTIPLE CHOICE QUESTION

5 mins • 10 pts

(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.

Tags

CCSS.8.EE.A.1

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Unit 1 Pretest

(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.

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

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