Adding and Subtracting Numbers in Scientific Notation (Part 1)

This lesson teaches how to add and subtract numbers in scientific notation. It uses an example of company profits to demonstrate the process. The key steps include adjusting the powers of 10 to be the same, performing the addition, and ensuring the result is in proper scientific notation. The final result is verified to meet the criteria for scientific notation.

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

• Subtract the smaller number from the larger one

• Convert them to fractions

• Ensure they have the same power of 10

• Multiply them by 10

How do you adjust 8.3 x 10^6 to have the same power of 10 as 1.5 x 10^7?

• Subtract 1 from the exponent

• Divide by 10

• Multiply by 10

• Add 1 to the exponent

What is the result of adding 0.83 x 10^7 and 1.5 x 10^7?

• 3.33 x 10^7

• 0.33 x 10^7

• 1.33 x 10^7

• 2.33 x 10^7

Why is it important to check if the final result is in scientific notation?

• To make sure the exponent is negative

• To verify the exponent is positive

• To confirm the A value is between 1 and 10

• To ensure the A value is greater than 10

What is the total profit of the merged companies in scientific notation?

• 2.33 x 10^6

• 2.33 x 10^7

• 1.33 x 10^7

• 3.33 x 10^7