186k views
4 votes
What is the answer, with the correct number of significant figures, for this problem? 4.392g + 102.40g + 2.51g =_______.

1 Answer

0 votes

Answer : The correct answer will be,
109.30g

Explanation :

Significant figures : The figures in a number which express the value -the magnitude of a quantity to a specific degree of accuracy is known as significant digits.

The rule apply for the addition and subtraction is :

The least precise number present after the decimal point determines the number of significant figures in the answer.

The given expression is:


4.392g+102.40g+2.51g


\Rightarrow 109.302g

In the given expression, 4.392 has 4 significant figures, 102.40 has 5 significant figures and 2.51 has 2 significant figures. From this we conclude that least precise number present after the decimal point is 2.

Thus, the answer will be
109.30g

User Bxx
by
7.5k points

Related questions

1 answer
2 votes
168k views
asked Nov 23, 2018 37.3k views
Emad Gabriel asked Nov 23, 2018
by Emad Gabriel
8.8k points
1 answer
5 votes
37.3k views
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.