Mastering Scientific Notation: Conversion and Addition Quiz

A scientist measures the height of a mountain as 4,500 meters. Convert this height to scientific notation.

• 4.5 x 10^4

• 4.5 x 10^3

• 450 x 10^1

• 45 x 10^2

The distance from Earth to the nearest star is about 4.24 light-years. Write this distance in scientific notation.

• 4.24 x 10^0

• 4.24 x 10^2

• 4.24 x 10^-1

• 4.24 x 10^1

A bacteria culture grows to 1,000,000 cells. Express this number in scientific notation.

• 1.0 x 10^7

• 1.0 x 10^6

• 10 x 10^6

• 1.0 x 10^5

A comet travels at a speed of 70,000 kilometers per hour. Write this speed in scientific notation.

• 7.0 x 10^4 km/h

• 0.7 x 10^6 km/h

• 70 x 10^3 km/h

• 7.0 x 10^5 km/h

If a cell is 0.0000005 meters in size, convert this measurement to scientific notation.

• 5.0 x 10^-7

• 5.0 x 10^-8

• 0.5 x 10^-6

• 5.0 x 10^-6

A researcher finds that a certain virus can multiply to 2,500,000 times its original size. Write this number in scientific notation.

• 2.5 x 10^6

• 0.25 x 10^7

• 25 x 10^5

• 2.5 x 10^5

If you have 3.2 x 10^5 and 4.5 x 10^4, what is the sum of these two numbers in scientific notation?

• 3.2 x 10^4

• 3.7 x 10^5

• 4.5 x 10^5

• 3.245 x 10^5

Add 1.2 x 10^3 and 3.4 x 10^2. Provide your answer in scientific notation.

• 3.6 x 10^3

• 1.54 x 10^3

• 1.4 x 10^2

• 1.6 x 10^3

A galaxy is estimated to contain 100,000,000 stars. Convert this number to scientific notation.

• 1.0 x 10^7

• 1.0 x 10^9

• 1.0 x 10^8

• 1.0 x 10^6

If a car travels 1.5 x 10^2 kilometers in one trip and 2.3 x 10^2 kilometers in another, what is the total distance traveled in scientific notation?

• 3.0 x 10^2 kilometers

• 4.0 x 10^2 kilometers

• 3.8 x 10^2 kilometers

• 2.8 x 10^2 kilometers