Question

write the number in scientific notation.
0.021
0.021 =
(use scientific notation. use the multiplication symbol in the math palette as needed)

Explanation:

Step1: Recall scientific notation rules

Scientific notation is \( a \times 10^n \), where \( 1 \leq |a| < 10 \) and \( n \) is an integer. For \( 0.021 \), move the decimal point to get \( a = 2.1 \).

Step2: Determine the exponent \( n \)

We moved the decimal 2 places to the right, so \( n=-2 \). Thus, \( 0.021 = 2.1 \times 10^{-2} \).

Answer:

\( 2.1 \times 10^{-2} \)