The area of Greenland is 840,000 square miles. What is this number in scientific notation

To convert a number into scientific notation, we need to express it as a product of a number between 1 and 10 and a power of 10.

The area of Greenland is given as 840,000 square miles. To express this in scientific notation, we have to move the decimal point to the right until there is a single non-zero digit to the left of the decimal point.

Starting with 840,000, we move the decimal point six places to the left:
8.4 * 10^5

In scientific notation, the number is expressed as 8.4 x 10^5.