Question

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

Answer 1

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*}`