Scientific Notation

• 2.1 x 10⁶

• 2.1 x 10^-6

• 9.9 x 10⁶

• 9.9 x 10^-6

Mercury’s average distance from the sun is 57,190,000 km. What is the distance in scientific notation?

• 5719 x 10⁴

• 571.9 x 10⁵

• 57.19 x 10⁶

• 5.719 x 10⁷

(3 x 10⁷)(3.1 x 10^-4)

• 9.3 x 10^-28

• 9.3 x 10³

• 6.1 x 10³

• 6.1 x 10^-28

The thickness of a human hair can be about 6 x 10^-3 centimeters. Which shows this thickness in standard form?

• 6000 cm

• 0.06 cm

• 0.006 cm

• 0.0006 cm

The speed of light is about 300 million meters per second. Which expression shows this speed in scientific notation?

• 300 x 10⁶

• 300 x 10^-6

• 3 x 10⁸

• 3 x 10^-8

To travel from Earth to Saturn, the craft needs to travel a total distance of 1.4 x 10⁹ km. A spacecraft leaves Earth’s orbit at a speed of 7 x 10⁵ km per day. How long will it take the spacecraft to reach Saturn? Express your answer in correct scientific notation.

• 2 x 10⁴

• 0.2 x 10⁴

• 2 x 10³

• 0.7 x 10⁴

There are approximately 3.1 x 10⁸ people in the United States. If on average each person has 4.1 x 10¹ coins lying around on dressers, in pockets, in cars, etc., how many total coins do all the people in the U.S. have?

• 127.1 x 10⁸

• 12.71 x 10⁹

• 1.271 x 10¹⁰

• .1271 x 10¹¹

There are approximately 3.61 x10⁵ babies born every day. How many babies are born in 30 days? Choose all that are correct.

• 10830000

• 10.83 x 10⁶

• 1.083 x 10⁷

• .1083 x 10⁸

Convert to scientific notation:
520,000,000  

• 52 x 10⁷

• 5.2 x 10⁷

• 5.2 x 10⁸

• 0.52 x 10⁹

Write 9,450,000 in scientific notation.

• 9.45 x 10⁴

• 9.45 x 10⁵

• 9.45 x 10⁶

• .945 x 10⁷