Applying operations on numbers expressed using scientific notation to solve mathematical and real-world problems

What is the simplified form of
(3.25 x 10³)(7.8 x 10⁶)

• 2.535 x 10¹⁰
• 2.535 x 10¹⁸
• 2.535 x 10¹⁹
• 2.535 x 10⁹

When multiplying numbers in scientific notation, the power of ten must be the same.

• True

• False

13) Four countries displayed the number of houses that had internet service in scientific notation. Which orders the countries in descending order?

• Italy, France, United States, Spain

• United States, Spain, Italy, France

• Italy, United States, Spain, France

• United States, Italy, Spain, France

(1.4 x 10¹⁰)( 1.2 X 10³⁾

• 1.68 X 10¹³
• 1.68 X 10³
• 16.8 X 10³
• 16.8 X 10¹²

What is (3 x 10⁹) - (2 x 10⁷) ?

• 2.98 x 10⁹

• 1 x 10²

4x10⁷ x 2x10⁴

• 7x10⁹

• 7,600,000

• 6x10⁷

• 2x10³

What is 7.5 x 10⁴ divided by 2.5 x 10³ in scientific notation

• 3 x 10¹

• 0.3 x 10¹

• 0.3 x 10 ^-1

• 3 x 10^-1

Multiply:

(4 x 10⁵)(5 x 10^-3)

• 20 x 10²

• 20 x 10^-8

• 2 x 10³

• 2 x 10