Multiplying and Dividing in Scientific Notation

This video tutorial teaches how to multiply and divide expressions in scientific notation. It begins with an introduction to the concept, followed by examples of multiplying small numbers and dividing large numbers using scientific notation. The tutorial applies these concepts to a real-world problem involving pizza consumption in the United States. Finally, it provides practice problems for viewers to solve, reinforcing the learning objectives.

What is the main goal of this lesson?

• To explore the history of scientific notation.

• To learn about pizza consumption in the US.

• To understand how to multiply and divide expressions in scientific notation.

• To calculate the number of pizzas consumed worldwide.

How many pizzas do Americans consume annually?

• 3 billion

• 4 billion

• 2 billion

• 1 billion

What is the first step in multiplying numbers in scientific notation?

• Subtract the exponents.

• Divide the coefficients.

• Multiply the coefficients.

• Add the exponents.

What is the result of multiplying 3 ten-thousandths by 72 millionths in scientific notation?

• 2.16 x 10^-8

• 2.16 x 10^-9

• 21.6 x 10^-8

• 21.6 x 10^-9

What is the first step in dividing numbers in scientific notation?

• Multiply the coefficients.

• Add the exponents.

• Divide the coefficients.

• Subtract the exponents.

What is the result of dividing 5 million by 350,000 in scientific notation?

• 1.4 x 10^4

• 1.4 x 10^5

• 14 x 10^4

• 14 x 10^5

How many pizzas does the average household consume per year?

• 25

• 23

• 20

• 30

What is the result of 8 divided by 2.6 in scientific notation?

• 0.31 x 10^-2

• 3.1 x 10^-1

• 3.1 x 10^-2

• 0.31 x 10^-1

What is the result of 5.1 times 4 in scientific notation?

• 20.4 x 10^11

• 2.04 x 10^10

• 20.4 x 10^10

• 2.04 x 10^11