Scientific Notation and Properties of Exponents

What is the simplified form of the expression below? (2²)⁴ × 2⁻⁵

• 2

• 4

• 2³

• 4³

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CCSS.8.EE.A.1

What is the value of √324?

• Only 18

• Only 324

• 18 and -18

• 324 and -324

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CCSS.8.EE.A.2

What is the cube root of 216?

• 6

• -6

• 72

• -72

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CCSS.8.EE.A.2

Guillermo measured a microbe to be 0.0000067 meters across. What is 0.0000067 written in scientific notation?

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CCSS.8.EE.A.3

Maria learned in science class that the closest distance between the Moon and Earth is 221,436 miles. In scientific notation, which expression best approximates this distance?

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CCSS.8.EE.A.3

Which number is irrational?

Which number is irrational?

• 0.6565656665...

• 0.78

• 2.35

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CCSS.8.NS.A.1

A square has an area of 29 square inches. Which choice below is the best estimate for the side length of the square?

• More than 5 inches but less than 6 inches.

• More than 7 inches but less than 8 inches.

• More than 14 inches but less than 15 inches.

• More than 25 inches but less than 36 inches.

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CCSS.8.NS.A.2

Which value below is the greatest?

• √10

• 8/3

• √3

• 11/12

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CCSS.8.NS.A.2

Given that the square root of 225 is 15 and the square root of 256 is 16, which number is closest to the square root of 240?

• 15.1

• 15.5

• 15.8

• 15.9

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CCSS.8.NS.A.2