The significant figures in a number include all the digits that are certain plus the first uncertain digit.

Question

Quizplus · Accepted Answer

This statement is true because significant figures are the meaningful digits in a number, including both certain and uncertain digits. The uncertain digit is the last digit in a measurement, which is estimated or uncertain. Therefore, the significant figures include all the certain digits plus the first uncertain digit.

The Significant Figures in a Number Include All the Digits