Question

Simplifique as expressões:
2×0,0000001+3+0,0000002
0,0000001+0,0000002

Answer 1

$2.10^{7-} +3.(2.10^{-7})= 8.10^{-7}$
   
$1.10^{-6}+2.10^{-6}=3.10^{-7}$