How do you round 0.48 to 1 significant figure?

Answer 1

0.000892 to 1 significant figure is 0.0009 (1st significant figure is the first non-digit from the left, where in this case you can omit the number 2 since it will make no difference to the answer)

Answer 2

0.48 rounded to 1 significant figure would be 0.5. You round up the last digit if it's 5 or higher.

Answer 3

0.5