Unit 5 Scientific Notation Review

If the world population is 6,900,000,000; how would it be written in scientific notation?

• 6.9 x 10⁹

• 6.9 x 10⁶

• 6.9 x 10⁸

• 6.9 x 10^-9

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CCSS.8.EE.A.3

• A

• B

• C

• D

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CCSS.8.EE.A.3

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CCSS.8.EE.A.3

Arjun is calculating the distance between two countries. He finds that the distance is
8.317 x 10⁶ meters. What is this distance in kilometers in standard form? 1,000 meters = 1 kilometer

• 83,170

• 8,317,000

• 831,700

• 8,317

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CCSS.8.EE.A.3

Evelyn is measuring the concentration of a solution in a lab experiment. She notes down the concentration as 1.28 x 10^-4. How should she write this concentration in decimal form?

• 0.128

• 0.0000128

• 0.0128

• 0.000128

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CCSS.8.EE.A.3

• Anders wrote 4.5 instead of 4.05

• Anders used a base of 10 instead of 6

• Anders used a positive power instead of a negative power.

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CCSS.8.EE.A.3

Which of the following are correct when writing in scientific notation?

(choose all that apply)

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CCSS.8.EE.A.3

For what value of a will 6 × 10⁴ be 20 times larger than a × 10³?

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CCSS.8.EE.A.4

One sotukle is approximately 0.000057625 of a parnition. What is this number in scientific notation?

a x 10^-5

^{What is the value of a?}

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CCSS.8.EE.A.3

One gratin is approximately 0.04286 of a lithwa. What is this number in scientific notation?

4.286 x 10^b

^{What is the value of b?}

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CCSS.8.EE.A.3