Question

5. Express the following sum to appropriate
number of significant figures :
b. 319.5 g - 20460 g - 0.0639 g - 45.642 g
- 4.173 g explain​

Answer 1

Answer : The sum to appropriate  number of significant figures is, -20190 g

Explanation :

As we are given :

319.5 g - 20460 g - 0.0639 g - 45.642 g - 4.173 g

By solving the terms we get:

= -20190.3789 g

= -20190 g

As we know that, in addition and subtraction, the final answer is rounded to the minimum number of decimal point of the number taking part in calculation.

If there is no decimal point, then the final answer will have no decimal point.

Hence, the sum to appropriate  number of significant figures is, -20190 g