SOLUTION: Express in scientific notation the following: (5*10^-5)+(2.46*10^-3) is the answer 2.455*10^-3

Algebra ->  Exponents -> SOLUTION: Express in scientific notation the following: (5*10^-5)+(2.46*10^-3) is the answer 2.455*10^-3      Log On


   

Question 1074501: Express in scientific notation the following:
(5*10^-5)+(2.46*10^-3)
is the answer 2.455*10^-3
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!

(5*10^-5)+(2.46*10^-3)
------------
The exponents have to match to combine them.
Change either of both so they match.
---
5*10^-5 + 2.46*10^-3 = 5*10^-5 + 246*10^-5
= 251*10^-5
Then adjust the decimal point.
= 2.51*10^-3
======================
Or,
5*10^-5 + 2.46*10^-3 = 0.05e-3 + 2.46e-3
= 2.51e-3
Or 2.51*10^-3
---------------
e format, 2.46e-3 is less typing, and is commonly used.