Question

Round off or add zeros to the following calculating answers to give a final answer with three significant figures. Express answer using three significant figures.

0.000 012 58 L

Answer 1

$0.000\ 012\ 58L \simeq 0.000\ 012\ 6L$ (3 significant figures)

This is because 8 is used to round up the third digit (which is 5) to 6.