Scientific Notation and Exponential Functions

What is 7.8 x 10^4 in standard notation?

• 7,800

• 78,000

• 780,000

• 7,800,000

What is 4.1 x 10^-3 in standard notation?

• 4.100

• 0.041

• 0.0041

• 0.41

Write 240,000 in scientific notation.

• 2.4 x 10^5

• 0.24 x 10^5

• 0.24 x 10^4

• 2.4 x 10^4

Write 0.059 in scientific notation.

• 5.9 x 10^-3

• 59 x 10^-3

• 59 x 10^-2

• 5.9 x 10^-2

An elephant weighs 1.3 x 10^4 pounds and a giraffe weighs 3.6 x 10^3 pounds. How many times heavier is the elephant than the giraffe?

• 2.3

• 3.6

• 3.9

• 4.2

A basketball player scored 3.3 x 10^4 points in their career, while another player scored 2.8 x 10^4 points. What is the difference in their total points?

• 5.0 x 10^3

• 5.5 x 10^3

• 5.0 x 10^4

• 5.5 x 10^4

A solar panel contains thin layers of silicon. Each layer is 1.1 x 10^-3 millimeters thick. If there are 6.2 x 10^4 silicon layers, what is the total thickness of all the layers stacked together in millimeters?

• 6.82

• 68.2

• 682

• 6820

A certain type of bacteria measures 2.5 x 10^-6 meters in length. If a colony contains 3.0 x 10^8 of these bacteria lined up end-to-end, what is the total length of the colony in meters?

• 7.5 x 10^1

• 7.5 x 10^2

• 7.5 x 10^3

• 7.5 x 10^4