Scientific Notation Worksheets

**Page 16**

151.

The Orbital Period of Pluto is about 91,000 days. Identify the number in scientific notation.

a. | ^{4} | ||

b. | ^{4} | ||

c. | ^{4} | ||

d. | ^{3} |

Correct answer : (3)

152.

The length of the Snake river is about 1.04 × 10^{3} miles. Express the length in standard form.

a. | 140 miles | ||

b. | 1,040 miles | ||

c. | 1,400 miles | ||

d. | 104 miles |

Correct answer : (2)

153.

The population of Delaware was 783,600 in the year 2000. Write this number in scientific notation.

a. | 7.836 x 10 ^{4} | ||

b. | 7.836 x 10 ^{6} | ||

c. | 7.836 x 10 ^{5} | ||

d. | 7.836 x 10 ^{3} |

The first factor in the scientific notation of 783,600 is 7.836

[Move the decimal point to get a factor greater than or equal to 1 and less than 10.]

The second factor is 10

[The decimal is moved 5 places to the left. Use this number as the exponent of 10.]

The population of Delaware in scientific notation is 7.836 x 10

Correct answer : (3)

154.

The height of the Empire State building in New York is 1,250 ft. Write this number in scientific notation.

a. | 1.25 x 10 ^{4} | ||

b. | 1.25 x 10 ^{3} | ||

c. | 1.25 x 10 ^{2} | ||

d. | None of the above |

The first factor in the scientific notation of 1,250 is 1.25

[Move the decimal point to get a factor greater than or equal to 1 and less than 10.]

The second factor is 10

[The decimal is moved to 3 places to the left. Use this number as the exponent of 10.]

So, the height of the Empire state building in scientific notation is 1.25 x 10

Correct answer : (2)

155.

The population growth rate in the world is about 10,800 people per hour. Write this number in scientific notation.

a. | 10.8 x 10 ^{4} | ||

b. | 1.08 x 10 ^{4} | ||

c. | 1.06 x 10 ^{4} | ||

d. | 10.6 x 10 ^{4} |

The first factor in the scientific notation of 10,800 is 1.08.

[Move the decimal point to get a factor greater than or equal to 1 and less than 10.]

Second factor is 10

[The decimal point is moved 4 places to the left. Use this number as the exponent of 10.]

So, the population growth rate in the world expressed in scientific notation is 1.08 x 10

Correct answer : (2)

156.

The length of the river Missouri is 2,540 miles. Write this number in scientific notation.

a. | 2.54 x 10 ^{2} | ||

b. | 25.4 x 10 ^{3} | ||

c. | 25.4 x 10 ^{4} | ||

d. | 2.54 x 10 ^{3} |

The first factor in the scientific notation of the number 2,540 is 2.54

[Move the decimal point to get a factor greater than or equal to 1 and less than 10.]

The second factor is 10

[The decimal is moved 3 places to the left. So the power of 10 in the second factor is 3.]

So, the length of the river Missouri expressed in scientific notation is 2.54 x 10

Correct answer : (4)

157.

The radius of the sun is about 695000 km. Write this number in scientific notation.

a. | 6.95 x 10 ^{5} | ||

b. | 6.95 x 10 ^{3} | ||

c. | 6.95 x 10 ^{4} | ||

d. | 6.95 x 10 ^{6} |

The first factor in the scientific notation of 695,000 is 6.95

[Move the decimal point to get a factor greater than or equal to 1 and less than 10.]

The second factor is 10

[The decimal is moved 5 places to the left. Use this number as the exponent of 10.]

So, the radius of the sun in scientific notation is 6.95 x 10

Correct answer : (1)

158.

The average daily newspaper circulation in the U.S. in the year 2000 was 55,800,000. Write this number in scientific notation.

a. | 55.8 x 10 ^{7} | ||

b. | 5.58 x 10 ^{7} | ||

c. | 5 x 10 ^{8} | ||

d. | 0.558 x 10 ^{7} |

The first factor in the scientific notation of 55,800,000 is 5.58

[Move the decimal point to get a factor greater than or equal to 1 and less than 10.]

The second factor is 10

[The decimal is moved 7 places to the left. Use this number as the exponent of 10.]

So, the average daily newspaper circulation expressed in scientific notation is 5.58 x 10

Correct answer : (2)

159.

The mean distance from the Pluto to the Sun is about 5,913,520,000 km. Write this number in scientific notation.

a. | 5.91352 x 10 ^{7} km | ||

b. | 5.91352 x 10 ^{9} km | ||

c. | 5.91352 x 10 ^{8} km | ||

d. | 5.91352 x 10 ^{10} km |

The first factor in the scientific notation of 5,913,520,000 is 5.91352

[Move the decimal point to get a factor greater than or equal to 1 and less than 10.]

The second factor is 10

[The decimal is moved 9 places to the left. Use this number as the exponent of 10.]

So, the mean distance from the Pluto to the Sun in scientific notation is 5.91352 x 10

Correct answer : (2)

160.

The total number of automobiles registered in the year 1999 was 132,432,000. Write this number in scientific notation.

a. | 1.32432 x 10 ^{7} | ||

b. | 1.32432 x 10 ^{8} | ||

c. | 1.32432 x 10 ^{6} | ||

d. | 1.32432 x 10 ^{9} |

The first factor in the scientific notation of 132,432,000 is 1.32432

[Move the decimal point to get a factor greater than or equal to 1 and less than 10.]

The second factor is 10

[The decimal point moved 8 places to the left. Use this number as the exponent of 10.]

The total number of automobiles registered expressed in scientific notation is 1.32432 x 10

Correct answer : (2)