Unit 7_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?

• 4.3092 x 10¹

• 3.9098 x 10⁷

• 3.9098 x 10⁸

• 5.7678 x 10⁸

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CCSS.8.EE.A.4

The mass of he sun is 1.989 x 10³⁰ kilograms. The mass of the earth is 5.98 x 10²⁴ kilograms. How many times bigger is the sun than the earth?

• 3.326 x 10⁵

• 3.326 x 10⁶

• 1.99 x 10³⁰

• 1.99 x 10⁶

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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?

• 1.271 x 10¹⁰

• 1.271 x 10⁹

• 1.271 x 10¹¹

• 1.271 x 10⁸

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CCSS.8.EE.A.4

A factory can make 3 × 10⁴ t-shirts per day, how many t-shirts will it make in 2.5 ×10² days?

• 7.5 × 10⁶ t-shirts

• 7.5 × 10⁴ t-shirts

• 75 × 10⁵ t-shirts

• none of these

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CCSS.8.EE.A.4

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?

• Add

• Subtract

• Multiply

• Divide

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CCSS.8.EE.A.4

The US spends an average of 1.02x10⁴ dollars on each student per year. There are about 7.6x10⁷ students in the US. About how much money total is spent on students per year?

• 7.752 x 10¹¹

• 7.752 x 10²⁸

• 8.62 x 10¹¹

• 8.62 x 10²⁸

As part of a community service project, a school planted 7x10⁵ trees in a year. If there are 3.5x10³ students in the school, how many trees did each student plant?

• 2 x 10⁸

• 2 x 10²

• 3.5 x 10⁸

• 3.5 x 10²

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CCSS.8.EE.A.4

The population of Mathville is 5.6 x 10³. The population of Algeville is 1.3 x 10⁴. How many more people are there in Algeville?

• 7400

• 740

• 7.4 x 10⁴

• 7.4 x 10¹

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CCSS.8.EE.A.4

The state of Colorado covers about 1.04 × 10⁵ square miles. The Indian Ocean covers about 2.808 × 10⁷ square miles. How many times bigger than Colorado is the Indian Ocean?

• 270

• 2.92032 x 10¹²

• .0037

• 100

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CCSS.8.EE.A.4

In 2012, the population of New York State (NY) was about 2 × 10⁷ and the population of the State of Oregon (OR) was about 4 × 10⁷. How many times the population of OR is NY?

• 5

• 8 x 10¹⁴

• 2

• 0.5

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CCSS.8.EE.A.4