When the measured number 0.0090 is multiplied by the measured number 87.10,the answer has two significant figures.

Question

Quizplus · Accepted Answer

The rule for multiplication and division with significant figures is to round the answer to the least number of significant figures in any of the factors. In this case, both factors have two significant figures, so we round the answer to two significant figures as well. When we multiply 0.0090 and 87.10, we get 0.7859, which rounds to 0.79. Therefore, the answer has two significant figures, as given in the question.

When the Measured Number 0