Round the following number to four significant figures and express the result in standard exponential notation: 442,722

Question

Quizplus · Accepted Answer

To round 442,722 to four significant figures, we need to keep the first four non-zero digits, which are 4, 4, 2, and 7. The fifth digit is 2, which is less than 5, so we can ignore it. Therefore, the rounded number is 4.427 × 10^5, which is expressed in standard exponential notation as D.

Round the Following Number to Four Significant Figures and Express