A scientist measures the mass of a small particle as 3.2 x 10^-27 kg. If she has 5 such particles, what is the total mass in scientific notation?
Exponents and Scientific Notation Word Problems for 7th Grade

Quiz
•
English, Mathematics
•
7th Grade
•
Hard
Anthony Clark
Used 4+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3.2 x 10^-26 kg
1.0 x 10^-25 kg
6.4 x 10^-27 kg
1.6 x 10^-26 kg
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The speed of light is approximately 3.0 x 10^8 meters per second. How long does it take light to travel 1.5 x 10^9 meters? Express your answer in seconds using scientific notation.
3.0 x 10^1
4.0 x 10^0
6.0 x 10^0
5.0 x 10^0
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A bacteria culture grows at a rate of 2 x 10^3 bacteria per hour. How many bacteria will there be after 4 hours? Write your answer in scientific notation.
1.6 x 10^4
2.0 x 10^3
8.0 x 10^3
4.0 x 10^3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A comet is traveling at a speed of 2.5 x 10^4 km/h. How far will it travel in 3 hours? Provide your answer in scientific notation.
2.5 x 10^4 km
7.5 x 10^4 km
1.0 x 10^5 km
5.0 x 10^4 km
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The area of a small park is 1.5 x 10^4 square meters. If the park is divided into 5 equal sections, what is the area of each section in scientific notation?
2.5 x 10^3
3.0 x 10^3
4.0 x 10^3
1.0 x 10^4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A cell phone tower can transmit signals to an area of 2.0 x 10^3 square kilometers. If there are 4 towers, what is the total area they can cover in scientific notation?
6.0 x 10^3
10.0 x 10^3
4.0 x 10^3
8.0 x 10^3
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A certain virus can replicate itself 3 times every hour. If it starts with 1.0 x 10^2 viruses, how many viruses will there be after 5 hours? Express your answer in scientific notation.
1.5 x 10^4
2.43 x 10^4
1.0 x 10^3
3.0 x 10^5
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