Scientific Notations Operations

The average distance from Earth to the Moon is approximately 384,400,000 meters. What is the average distance, in kilometers, from Earth to the Moon written in scientific notation?

• 1.601 x 10⁹

A scientist collects two rock samples. One rock has a mass of 9 x 10^-1 kilograms, and the other rock has a mass of 2 x 10² kilograms. About how many times greater is the mass of the larger rock than the smaller rock?

• 45

• 200

• 450

• 2000

What is the product of 4.2 x 10^-2 and 0.003?

• 1.26 x 10^-6

I can interpret scientific notation that has been generated by technology. Two numbers, n and m, are shown as they appear in scientific notation on a scientific calculator display. Display for n: 1.2 E 12, Display for m: 2.4 E 14. Which expression represents the quotient of n/m written in scientific notation?

• 5 x 10^-2

• 5 x 10^-3

A very small dust particle has a diameter of about 0.004 inches. Most cells of living organisms have diameters of about 4 x 10^-4 inches. Which is larger, the dust particle or the typical cell in a living organism?

• The dust particle is larger.

• The typical cell in a living organism is larger.

• Both are of the same size.

The thinnest commercial glass is 9.84 x 10^-4 in thick. The glass of an aquarium is 1000 times as thick. How thick is the aquarium glass?

• 1.5 in thick.

• 0.5 in thick.

• 2 in thick.

Beth divided two numbers on her calculator using scientific notation. The diagram shows her screen. What is the answer to Beth's problem in scientific notation?

In 2011, the population of Finland was about  5.379 x 10⁶. The population of Norway was about 4.937 x10⁶. About how much more was the population of Finland than Norway? Write your answer in scientific notation.

• 1.063 x 10⁶

• 4.42 x 10⁵

• 3.063 x 10⁶

• 4.063 x 10⁶