# Scientific Notation Word Problems: Question Preview (ID: 22723)

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The bedroom of our house is 1,200 cubic meters. We know that there are 3.4 x 10^9 particles of dust per cubic meter. Write how many particles of dust are present in the bedroom of our house.
a) 4.08 x 10^12 particles
b) 3.52 x 10^-7 particals
c) 3.4 x 10^9 particles
d) 4.08 x 10^11 particles

Find out the weight of 6 billion dust particles, if a dust particle has a mass of 7.53 x 10^-10 g.
a) 4.518 x 10^-3
b) 7.96 x 10^18
c) 4.518 x 10^0 grams
d) 6 x 10^9 grams

Last month, my friend bought a computer. If it can perform 4.66 x 10^8 calculations per second, what is the performance of the computer in one minute?
a) 7.77 x 10^6 calculations
b) 4.66 x 10^8 calculations
c) 4.66 x 10^9
d) 2.796 x 10^10 calculations

In Australia, the people use approximately 2,240,000,000 pounds of bread in a year. How can we write this number in scientific notation?
a) 22.4 x 10^10
b) 2.24 x 10^9
c) 2.24 x 10^7
d) .224 x 10^10

If a satellite travels 62.7 x 10^9 miles from Earth, write this in correct scientific notation
a) .627 x 10^11
b) 6.27 x 10^9
c) 6.27 x 10^10
d) 6.27 x 10^8

0.000065 is the wave length of yellow light. Can you express the measurement using scientific notation?
a) 6.5 x 10^-5
b) 6.5 x 10^5
c) .65 x 10^-6
d) 65 x 10^-6

If the speed of light is 3 x 10^8 meters/second, how many seconds does it take light to reach the Earth, if the sun is 1.5 x 10^11 meters from Earth?
a) 2 x 10^-3 seconds
b) 1.503 x 10^11 seconds
c) 5 x 10^2 seconds
d) 1.497 x 10^11 seconds

Through research, scientists found that the body of a 200 lb person consists of 3.2 x 10^-5 lbs of zinc. In the bodies of 1,500 such people, how much zinc is present?
a) 4.8 x 10^-2 lbs
b) 9.6 x 10^0 lbs
c) 1.5 x 10^3 lbs
d) 2.13 x 10^-8 lbs

If we suppose that the volume of Lake Rason is approximately 2.56 x 10^5 km^3 and Lake Rason is 20 times the volume of Lake Rushy, write the volume of Lake Rushy (approximately).
a) 2.56 x 10^5
b) 2.56 x 10^6
c) 1.28 x 10^4 volume
d) 5.126 x 10^5 volume

Scientists discovered that the size of the Antarctic Ocean is 2.033 x 10^7 Km^2. How big is the Arctic Ocean, if the Arctic Ocean is ¾ of the size of the Antarctic Ocean?
a) 2.032 x 10^7
b) 2.033 x 10^7
c) 2.72 x 10^7
d) 5.12 x 10^7

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