Scientific notation, multiply, divide

Which of these numbers is correctly written in scientific notation?

• 1234x10^-3

• 10.5x10⁹

• 1.234x10¹¹

• .5x10⁴

Level 1

Convert the following number in standard form into scientific notation: 2,718,000,000

• 2.718x10⁷

• 2.718x10^-9

• 2.718x10⁹

• 2.178x10¹⁰

(9.4 x 10⁶) (3.2 x 10⁵)

• 30.08 x 10¹¹

• 3.8 x 10¹⁰

• 3.008 x 10¹²

• 1.26 x 10³⁰

(1.5 x 10³) ²

• 1.5 x 10⁶

• 1.5 x 10⁵

• 2.25 x 10⁶

• 2.25 x 10⁵

• None of these

When multiplying numbers in scientific notation, what do you do with the exponents?

• Multiply them

• Add them

• Keep them the same

• Make them equal

What is scientific notation?

• A long way to write numbers containing a few digits
• A short way to write numbers containing many, many digits
• A number written without exponents
• None of the above

The rule of scientific notation is to write all exponents with a base of ____.

• 50
• 5
• 100
• 10

Solve:
(6 x 10⁶) / (2 x 10³)

• 12 x 10³
• 3 x 10⁹
• 1.2 x 10⁴
• 3 x 10³

What do you do to your exponents when you are dividing in scientific notation?

• Subtract

• Divide

• Multiply

• Add

(5.2 x 10¹³) / (1.3 x 10^-7)

• 3.9 x 10⁶

• 4 x 10²⁰

• 4 x 10⁶

• 3.9 x 10²⁰