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30 votes
Find the sum of 2.54 x 10^19 and 3.218 x 10^17

User Danil Chernokalov
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1 Answer

8 votes
8 votes

Solution:

To find the sum of


2.54*10^(19)\text{ }and\text{ }3.218*10^(17)

we have


\begin{gathered} 2.54*10^(19)\text{ + }3.218*10^(17) \\ =(254*10^(19)*10^(-2))+(3.218*10^(17)) \\ =(254*10^(17))+(3.218*10^(17)) \\ factor\text{ out the common term,} \\ 10^(17)*(254+3.218) \\ =10^(17)*257.218 \\ =2.57218*10^2*10^(17) \\ =2.57218*10^((2+17)) \\ =2.57218*10^(19) \\ \end{gathered}

Hence, the sum is evaluated to be


\begin{equation*} 2.57218*10^(19) \end{equation*}

User Christophe Blin
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2.7k points