Mastering Scientific Notation: Exponents & Estimation Quiz

A scientist measures the mass of a particle as 3.2 x 10^-27 kg. If she has 5.5 times as many particles, what is the total mass in scientific notation?

• 4.0 x 10^-27 kg

• 2.0 x 10^-26 kg

• 1.5 x 10^-26 kg

• 1.76 x 10^-26 kg

A car travels 1.2 x 10^3 kilometers in a week. Estimate how far it travels in 4 weeks using scientific notation.

• 4.8 x 10^3 kilometers

• 2.4 x 10^3 kilometers

• 5.2 x 10^3 kilometers

• 3.6 x 10^3 kilometers

The population of a small town is approximately 2.5 x 10^4 people. If the population increases by a factor of 1.2, what will the new population be in scientific notation?

• 2.0 x 10^4

• 3.5 x 10^4

• 3.0 x 10^4

• 2.4 x 10^4

A cell phone battery can hold a charge of 4.5 x 10^-3 kWh. If a user charges it 10 times, what is the total energy stored in scientific notation?

• 4.5 x 10^-1 kWh

• 4.5 x 10^1 kWh

• 4.5 x 10^-2 kWh

• 4.5 x 10^0 kWh

A factory produces 3.0 x 10^5 widgets per day. How many widgets does it produce in 30 days? Provide your answer in scientific notation.

• 1.0 x 10^7

• 8.0 x 10^6

• 7.5 x 10^6

• 9.0 x 10^6

A comet is traveling at a speed of 2.0 x 10^4 km/h. If it travels for 3 hours, how far does it go in scientific notation?

• 4.0 x 10^4 km

• 6.0 x 10^4 km

• 3.0 x 10^4 km

• 1.5 x 10^5 km

The distance from Earth to a star is about 4.0 x 10^16 meters. If a spaceship travels at a speed of 1.0 x 10^5 meters per hour, how long will it take to reach the star?

• 4.0 x 10^11 hours

• 4.0 x 10^10 hours

• 4.0 x 10^12 hours

• 4.0 x 10^9 hours

A researcher has 6.0 x 10^2 samples of bacteria. If she divides them equally into 4 petri dishes, how many samples will be in each dish in scientific notation?

• 2.0 x 10^2

• 3.0 x 10^2

• 1.5 x 10^2

• 4.5 x 10^2

A book contains 1.5 x 10^3 pages. If a reader reads 2.0 x 10^2 pages per week, how many weeks will it take to finish the book?

• 10 weeks

• 15 weeks

• 7.5 weeks

• 5 weeks

A computer processes data at a rate of 5.0 x 10^6 bits per second. How many bits can it process in 10 seconds? Provide your answer in scientific notation.

• 2.5 x 10^7

• 5.0 x 10^6

• 5.0 x 10^7

• 1.0 x 10^8