Question

What is 0.003689 correct to 3 significant figures?

Answer 1

In a decimal the zeros leading up to the 1st nonzero number are not significant. So round to 3 numbers.0.00369

Answer 2

significant numbers are numbers that 'have meaning' to it. This is any digit that is not a 0.

inside the decimal 0.003689, the digits 3, 6, 8, & 9 are all significant figures


rounded to only 3 significant figures.

9 is greater than 5, therefore, round upwards

0.003689 rounded becomes 0.00369

0.00369 is your answer

hope this helps