Question 4
Write $8.90010 \times 10^{1}$ in standard notation.

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 \(a\) 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 8.90010 one place to the right.

Step 3 ：\(a = 8.9001\)

Step 4 ：\(b = 1\)

Step 5 ：standard_notation = 89.001

Step 6 ：Final Answer: The standard notation of \(8.90010 \times 10^{1}\) is \(\boxed{89.001}\).