The are of Greenland is 840,000 square miles. What is this number in scientific notation
To express a number in scientific notation, you write it as a product of a decimal number and a power of 10.
To convert 840,000 square miles into scientific notation, we need to move the decimal point to the left until there is only one digit to the left of the decimal point.
Starting with 840,000, we can move the decimal point 5 places to the left to obtain 8.4.
Now we need to account for moving the decimal point 5 places. Each place represents a power of 10, so we have to multiply 8.4 by 10^5.
Therefore, the area of Greenland in scientific notation is 8.4 x 10^5 square miles.