Scientific Notation Basic

A scientist is studying a bacterial colony that has a population of 3,450,000. How can this number be represented in scientific notation?

• 34.5 x 10⁶

• 3.45 x 10⁶

• 3.45 x 10⁷

• 34.5 x 10⁵

A scientist records a bacteria population as 8.2 x 10² in her research paper. Which number is correctly written in scientific notation?

• 8.2 x 10²

• 82 x 10⁷

• 3.45 x 9⁴

A scientist records a measurement as 0.0056 meters in scientific notation. According to the rules of scientific notation, the first number must be greater than 1, but less than 10.

• False

• True

A scientist measures a certain chemical compound and finds its mass to be
8.317 x 10⁶ grams. How is this mass written in standard form?

• 8, 371, 000

• 83, 170, 000

• 837, 100

• 8, 317, 000

Change from standard form to scientific notation: 12,000,000

• 12.0  x  10⁷

• 0.12  x  10⁷

• 1.2  x  10⁶

• 1.2  x  10⁷

Change from standard form to scientific notation:  450,000

• 4.5  x  10⁵

• 45  x  10⁵

• 4.5  x  10⁴

• 4.5  x  10⁶

Change from standard form to scientific notation: 0.004078

• 4.078  x  10^-3

• 4.078  x  10³

• 40.78  x  10^-4

• .4078  x  10^-2

Write 3.5 x 10⁶  in standard notation.

• 0.0000035

• 35,000,000

• 3,500,000

• 0.00000035

Write 9.31 x 10^-5               in standard notation.

• 93,100,000

• 931,000

• 0.00000931

• 0.0000931

Write 0.216 in scientific notation.

• 216 x 10³

• 216 x 10^-3

• 2.16 x 10¹

• 2.16 x 10^-1