Mastering Scientific Notation: Add & 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

• 3.0 x 10^-27 kg

• 5.6 x 10^-27 kg

• 6.1 x 10^-27 kg

Tags

CCSS.8.EE.A.4

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?

• 4.0 x 10^16 meters

• 7.5 x 10^16 meters

• 9.0 x 10^16 meters

• 8.0 x 10^16 meters

Tags

CCSS.8.EE.A.4

A virus can replicate itself 1.5 x 10^6 times in an hour. If it replicates for 2 hours, how many times will it replicate in total, expressed in scientific notation?

• 2.0 x 10^6

• 3.0 x 10^6

• 1.5 x 10^6

• 4.5 x 10^6

Tags

CCSS.8.EE.A.4

A computer processes 2.3 x 10^9 calculations per second. How many calculations does it process in 5 seconds? Provide your answer in scientific notation.

• 5.75 x 10^10

• 2.3 x 10^10

• 1.15 x 10^10

• 1.15 x 10^9

Tags

CCSS.8.EE.A.4

The population of a small town is 1.2 x 10^5 people. If the population increases by 3.4 x 10^4 people, what is the new population in scientific notation?

• 1.8 x 10^5

• 1.2 x 10^5

• 1.4 x 10^5

• 1.54 x 10^5

Tags

CCSS.8.EE.A.4

A cell phone can store 5.6 x 10^3 songs. If a user adds 1.2 x 10^3 more songs, how many songs can the phone store in total, expressed in scientific notation?

• 7.8 x 10^3

• 5.6 x 10^3

• 6.8 x 10^3

• 6.0 x 10^3

Tags

CCSS.8.EE.A.4

A factory produces 4.5 x 10^2 toys each hour. How many toys does it produce in 24 hours? Provide your answer in scientific notation.

• 1.08 x 10^4

• 3.60 x 10^3

• 9.00 x 10^2

• 2.16 x 10^4

Tags

CCSS.8.EE.A.4

The height of a mountain is 8.9 x 10^3 meters. If another mountain is 1.1 x 10^4 meters tall, what is the combined height of both mountains in scientific notation?

• 1.5 x 10^4

• 2.0 x 10^4

• 1.99 x 10^4

• 1.8 x 10^4

Tags

CCSS.8.EE.A.4

A book contains 2.5 x 10^2 pages. If a reader finishes 1.5 x 10^2 pages in a week, how many pages are left to read in scientific notation?

• 2.0 x 10^2

• 1.5 x 10^2

• 3.0 x 10^2

• 1.0 x 10^2

Tags

CCSS.8.EE.A.4

A satellite orbits the Earth at a height of 3.0 x 10^7 meters. If another satellite orbits at 2.5 x 10^7 meters, what is the total height of both satellites from the Earth's surface in scientific notation?

• 4.5 x 10^7 meters

• 6.0 x 10^7 meters

• 3.5 x 10^7 meters

• 5.5 x 10^7 meters

Tags

CCSS.8.EE.A.4