Understanding and writing numbers in scientific notation

Which of these numbers are NOT in scientific notation?

• 1.2 x 10³
• 5.3 x 10⁹
• 2.0 x 10⁰
• 10 x 10²

How do you write
1001
in scientific notation?

• 1.0001 x 10⁴
• 1.01 x 10⁵
• 1.001 x 10³
• 10.1 x 10³

What is standard notation?

• A number that is written with a power of ten.

• A number that is written with an exponent and a base.

• The normal way we write numbers.

 $.28\times10^7$  

Is this correct scientific notation?

• Yes because it multiplies

• No because it multiplies

• No, because you have to a number greater than 1 but less than 10 to multiply by such as  $2.8\times10^7$  

• Yes because it has the number .28

Write in Scientific Notation

40,000,000,000

Which one below is in scientific notation?

• $0.0000256$

• $25.2\times10^{-5}$

• $3\times10^{11}$

• $2,500,000$

Write in scientific notation:
0.00036776

• 3.6776 x 10⁴
• 3.6776 x 10^-3
• 3.6776 x 10³
• 3.6776 x 10^-4

The standard form of 7 x 10⁵ is

• 75

• 700

• 700,000

• 7,000,000

4.6 x 10⁵

• 46000000000

• 460000.