Scientific Notation Multiply and Divide Word Problems

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

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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?

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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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What is the value of x in this equation?
(2.4×10³) × (3×10^x) = 7.2×10⁹

• 5

• 6

• 7

• 8

(8.4 * 10⁶)/(2.1 * 10³)

• 0.4 * 10⁴

• 400 * 10^-3

• 4 * 10³

• 4 * 10²

(9 x 10⁶) \ (3 x 10²⁾

• 27 x 10⁴

• 2.7 x 10⁵

• 3 x 10¹²

• 3 x 10⁴

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?

• 2 x 10^-4

• 0.5 x 10^-4

• 5 x 10^-5

• 2 x 10⁴

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?

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(2 x 10⁹)(4 x 10^-4)

• 8 x 10¹³

• 8 x 10³⁶

• 8 x 10⁵

• 8 x 10^-36