Question

Round 0.0645 g to 2 significant figures: ___ g 0.064 0.06 0.065 0.1

Answer 1

0.065 as 0 doesn't count as a significant number

Answer 2

Answer:

0.065 g

Step-by-step explanation:

Given: 0.0645

Round the given decimal to 2 significant figures.

Round: To reduce the decimal digits which changes last digits.

If digits greater than 5 then previous digits increase by 1

If digit less than 5 then no change in last digit.

Round of 2 decimal place: Write two digits after decimal.

Significant figure: The number of digits from first digits 1 to 9 .

In the given decimal number. Number of digits after decimal is 4 and significant is 3

0.0645 Round off to 2 significant number.

0.0645 ⇒ 0.065 g

The unit of number doesn't change.