Dividing Numbers in Scientific Notation

This lesson teaches how to divide numbers in scientific notation using a real-world example involving the speed of light and the distance from the Earth to the sun. The video explains the use of the distance formula, isolating variables, and dividing numbers in scientific notation. It also covers converting results to proper scientific notation and interpreting the results in a real-world context.

What is the speed of light in scientific notation?

• 10 x 10^8 meters per second

• 3 x 10^8 meters per second

• 1.5 x 10^11 meters per second

• 5 x 10^2 meters per second

Which formula is used to relate distance, rate, and time?

• d = r / t

• d = r - t

• d = r + t

• d = r x t

How do you isolate the variable 't' in the equation 1.5 x 10^11 = 3 x 10^8 x t?

• Subtract 3 x 10^8 from both sides

• Divide both sides by 3 x 10^8

• Multiply both sides by 3 x 10^8

• Add 3 x 10^8 to both sides

What is the result of dividing 1.5 by 3 in the context of scientific notation?

• 0.5

• 1.5

• 3

• 5

What is the final answer for the time it takes light to travel from the sun to the Earth in seconds?

• 50 seconds

• 5000 seconds

• 5 x 10^2 seconds

• 5 x 10^3 seconds