In scientific notation, what is the sum of 2.3 x 10^-3 and 5.4 x 10^-4

[latex]2,3\cdot 10^{-3}+5,4\cdot 10^{-4}=\\ 2,3\cdot 10^{-3}+0,54\cdot 10^{-3}=2,84\cdot 10^{-3}[/latex] If you think that I helped You and this answer is the best, choose: The best answer and say thanks. Thanks! :)