Question

express the following number in scientific notation.
4,500,000

4,500,000 = \square
(type your answer in scientific notation, using the appropriate symbol from the math palette for any multiplication.)

Explanation:

Step1: Identify the coefficient

To express a number in scientific notation, we first find a number between 1 and 10 (including 1, excluding 10) by moving the decimal point. For 4,500,000, moving the decimal point 6 places to the left gives 4.5.

Step2: Determine the exponent

The number of places we moved the decimal point is the exponent of 10. Since we moved it 6 places to the left, the exponent is 6. So in scientific notation, it is $4.5\times10^{6}$.

Answer:

$4.5\times10^{6}$