Computing in Scientific Notation

convert each number from scientific notation to standard form.

4.7 x 10^-8   

• .000000047
• .0000047
• .00047
• .0047

A computer can perform 4.66 x10 ⁸ calculations per minute. How many calculations can this computer perform in one minute?  Express your answer in standard form.

• 466,000,000
• 466,000
• 466
• .000000466

convert the number from standard form to scientific notation.

 100,231   

• 1.00231 x 10⁵
• 10.0231 x 10⁵
• 1.00231 x 10^-5
• .00100231 x 10⁵

Jeff Greenly is an asparagus farmer. In one year, Mr. Greenly harvested 82,300 pounds of asparagus. Express this number in scientific notation.

• 8.23 x 10⁴
• 8.23 x 10^-4
• .823 x 10^-5
• 823 x 10⁶

Simplify and write the result in scientific notation.
(2.59x10^-4)-(1.32x10^-5)

• 2.458 x 10^-4
• 3.23 x 10⁴
• .93 x 10^-6
• 9.44 x 10^-2

In 2006, Blue Ridge Parkway was visited by about 1.9 x 10⁷ people. That same year, Great Smoky Mountains National Park was visited by about 9.3 x 10⁶ people. How many more people visited Blue Ridge Parkway than Great Smoky Mountains National Park in 2006?  Express your answer in scientific notation.

• 9.7 x 10⁶
• 99.32232 x 10^-6
• 3.234 x 10⁵
• 9.23 x 10³

Simplify and express the result in scientific notation.

(2.5 × 10⁵) (9.6 × 10⁴)

• 2.4 x 10¹⁰
• 3.42 x 10¹⁰
• 8.34 x 10¹⁰
• 3.2 x 10¹⁰

Simplify and express the following in scientific notation.  
(3.71 x 10³) / (2.4 x 10^-6)

• 1.545 x 10⁹
• 1.123 x 10⁸
• 2.5 x 10⁵
• 4.34 x 10³

One cell has a diameter of 4.5 x 10^-6. If there are 20 cells growing in a lab, what are their combined diameters?  Express your answer in scientific notation.

• 9 x 10^-5
• 2.23 x 10^-4
• 9.12 x 10⁵
• .873 x 10^-12

A particular virus has a diameter of .0000007 meters.  Express this diameter in scientific notation.

• 7 x 10^-7
• 7 x 10⁷
• .7 x 10^-7
• 7.0 x 10⁷