Question 4
Write $8.90010 \times 10^{1}$ in standard notation. For your answer, please type in only a number. If you include anything other than your numerical answer, your result will ite recorded as incorrect.

Step 1 ：The question is asking to convert a number from scientific notation to standard notation. In scientific notation, the format is \(a \times 10^{b}\), where \(a\) is a number between 1 and 10 and \(b\) is an integer.

Step 2 ：To convert to standard notation, we move the decimal point in \(a\) one place to the right if \(b\) is positive and to the left if \(b\) is negative. In this case, \(b\) is 1, so we move the decimal point in \(a\) one place to the right.

Step 3 ：Given \(a = 8.9001\) and \(b = 1\), the standard notation is 89.001.

Step 4 ：Final Answer: The number \(8.90010 \times 10^{1}\) in standard notation is \(\boxed{89.001}\).