# What is the measurement 1042 L rounded off to two significant digits?

$1000 L$
2 s.f. means the first two digits of a number, i.e. $\textcolor{red}{23} 9.35$ becomes $\textcolor{red}{24} 0$ after rounding. $000 \textcolor{red}{16} .345$ becomes $\textcolor{red}{16}$ when rounded. Finally, $0.00 \textcolor{red}{18} 734$ becomes $0.00 \textcolor{red}{19}$ when rounded.