
Mastering Scientific Notation: Word Problems and Division
Authored by Anthony Clark
English, Mathematics
7th Grade
CCSS covered

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A scientist measures the mass of a small particle as 3.2 x 10^-27 kg. If she has 4.0 x 10^3 particles, what is the total mass of all the particles in scientific notation?
1.28 x 10^-23 kg
3.0 x 10^-23 kg
1.6 x 10^-23 kg
2.4 x 10^-23 kg
Tags
CCSS.8.EE.A.4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A comet is traveling at a speed of 2.5 x 10^4 km/h. If it travels for 3.0 x 10^2 hours, how far does it travel in scientific notation?
6.0 x 10^6 km
7.5 x 10^6 km
5.0 x 10^7 km
8.0 x 10^5 km
Tags
CCSS.8.EE.A.4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The distance from Earth to a star is approximately 4.5 x 10^16 meters. If a spaceship travels at a speed of 1.5 x 10^8 meters per hour, how long will it take to reach the star in hours, expressed in scientific notation?
1.0 x 10^9
3.0 x 10^8
2.0 x 10^8
4.5 x 10^7
Tags
CCSS.8.EE.A.4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A bacteria culture grows at a rate of 1.2 x 10^5 bacteria per hour. If the culture is observed for 2.5 x 10^1 hours, how many bacteria are there in total?
2.4 x 10^6
1.5 x 10^7
3.5 x 10^5
3.0 x 10^6
Tags
CCSS.8.EE.A.4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A cell phone tower can transmit signals to an area of 3.0 x 10^4 square meters. If a new tower is built that can transmit to 1.5 x 10^2 times that area, what is the area covered by the new tower in scientific notation?
1.5 x 10^7 m²
2.0 x 10^6 m²
4.5 x 10^6 m²
3.0 x 10^5 m²
Tags
CCSS.8.EE.A.4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A factory produces 6.0 x 10^3 widgets per day. If the factory operates for 2.0 x 10^2 days, how many widgets does it produce in total in scientific notation?
3.0 x 10^5
2.4 x 10^6
1.0 x 10^7
1.2 x 10^6
Tags
CCSS.8.EE.A.4
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The speed of light is approximately 3.0 x 10^8 meters per second. How far does light travel in 5.0 x 10^2 seconds in scientific notation?
4.0 x 10^12 meters
2.5 x 10^11 meters
1.0 x 10^10 meters
1.5 x 10^11 meters
Tags
CCSS.8.EE.A.4
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