Scientific notation word problems

The mean distance from the sun to Earth is 9.29 x 10⁷ miles. Jupiter's mean distance from the sun is 4.8388 x 10⁸ miles. What is the difference between these two distances in miles?

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CCSS.8.EE.A.4

There are approximately 3.1 x 10⁸ people in the United States. If each person has 4.1 x 10¹ coins, how many coins are there altogether?

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CCSS.8.EE.A.4

3. In the year 2000, the United States public debt was about 5.6 x 10¹² dollars.  The population of the United States in that year was about 2.8 x 10⁸ people.  What was the average debt per person?

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CCSS.8.EE.A.4

5. The Colorado Department of Education spent about 4.408 x 10⁹ in fiscal year 2004-2005 on public schools.  There were about 7.6 x 10⁵ students enrolled in public school.  What was the average spending per student? 

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CCSS.8.EE.A.4

1. The pitch of a sound is determined by the number of vibrations produced per second.  The note “middle C” produces 2.62 x 10² vibrations per second.  If a pianist plays middle C for 5 x 10^-1 seconds, how many vibrations will occur?

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CCSS.8.EE.A.4

6. Rhode Island is the smallest state in the United States. Its land area is about 2.9 x 10¹⁰ square feet. Alaska, the largest state, is about 5.5 x 10² square feet. How many times larger is Alaska than Rhode Island?

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CCSS.8.EE.A.4

7a.  The approximate total surface area of the Earth is  5.1 x 10⁸ km. Salt water has an approximate surface area of 352,000,000 km and freshwater has an approximate surface area of 9 x 10⁶ km. How much of the Earth’s surface is covered by water, including both salt and freshwater? 

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CCSS.7.EE.B.3

The net worth of Eli Manning is $\text{}1\times10^8$  and the net worth of  $4\times10^8$  . How many times Eli's net worth is Peyton's?

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CCSS.8.EE.A.4

A corporation earned a profit of $2.5 × 10⁴ for 1 × 10³ days in a row. What was the corporation’s total profit during this time period?

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CCSS.8.EE.A.4

In 2013 the Los Angeles Dodgers opening day payroll was about $2.16 × 10⁸ and the Houston Astros opening day payroll was about $2.4 × 10⁷. How much higher was the Dodgers’ payroll?

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CCSS.8.EE.A.4