A student incorrectly wrote $4.1 \times 10^{-3}$ as $0.00041$. What was the student's mistake?

They moved the decimal to the right instead of the left.

They moved the decimal 4 places instead of 3.

They should have used a positive exponent.

They moved the decimal 3 places but from the wrong starting point.

Negative Exponents, Scientific Notation for Small Numbers Practice — Grade 7 math