Mastering Scientific Notation: Add and Convert Like a Pro!

A scientist measures the mass of a small particle as 3.5 x 10^-27 kg. Convert this mass to scientific notation if it is increased by 2.1 x 10^-27 kg. What is the new mass in scientific notation?

• 4.5 x 10^-27 kg

• 6.1 x 10^-27 kg

• 5.6 x 10^-27 kg

• 3.0 x 10^-27 kg

The distance from Earth to a nearby star is approximately 4.2 x 10^16 meters. If another star is 3.8 x 10^16 meters away, what is the total distance to both stars in scientific notation?

• 7.5 x 10^16 meters

• 8.0 x 10^16 meters

• 9.0 x 10^16 meters

• 8.5 x 10^16 meters

A bacterium can reproduce every 20 minutes. If one bacterium starts reproducing, how many bacteria will there be after 3 hours? Express your answer in scientific notation.

• 6.00 x 10^3

• 4.00 x 10^2

• 5.12 x 10^2

• 3.20 x 10^1

A computer can process 1.5 x 10^9 calculations per second. How many calculations can it process in 5 seconds? Provide your answer in scientific notation.

• 3.0 x 10^9

• 1.5 x 10^9

• 1.0 x 10^10

• 7.5 x 10^9

The volume of a small water bottle is 5.0 x 10^-3 cubic meters. If you have 4 bottles, what is the total volume in scientific notation?

• 3.0 x 10^-2 m^3

• 1.5 x 10^-2 m^3

• 5.0 x 10^-3 m^3

• 2.0 x 10^-2 m^3

A galaxy is estimated to contain about 1.2 x 10^11 stars. If another galaxy contains 3.4 x 10^10 stars, how many stars are there in total in scientific notation?

• 1.2 x 10^11

• 3.4 x 10^10

• 1.0 x 10^11

• 1.54 x 10^11

The speed of light is approximately 3.0 x 10^8 meters per second. How far does light travel in 10 seconds? Express your answer in scientific notation.

• 1.0 x 10^10 meters

• 3.0 x 10^9 meters

• 2.5 x 10^9 meters

• 3.0 x 10^8 meters

A small virus measures about 1.0 x 10^-7 meters in diameter. If you have 5 viruses lined up, what is their total length in scientific notation?

• 5.0 x 10^-7

• 2.5 x 10^-7

• 1.0 x 10^-6

• 5.0 x 10^-8

The population of a small town is about 2.5 x 10^4 people. If the population increases by 1.5 x 10^4 people, what is the new population in scientific notation?

• 2.0 x 10^4

• 4.0 x 10^4

• 5.0 x 10^4

• 3.0 x 10^4

A smartphone can store 128 gigabytes of data, which is 1.28 x 10^2 gigabytes. If you have 3 smartphones, what is the total storage capacity in scientific notation?

• 3.84 x 10^2

• 1.92 x 10^2

• 4.00 x 10^2

• 2.56 x 10^2