Tính: a) (85,05 : 27 + 850,5) x 43 - 150,97

* Hướng dẫn giải

$\begin{array}{l}a)\left(85,05:27+850,5\right)\times 43-150,97\\ =\left(3,15+850,5\right)\times 43-150,97\\ =853,65\times 43-150,97\\ =36706,95-150,97\\ =36555,98\end{array}$

$\begin{array}{l}b)0,51:0,17+0,57:1,9+4,8:0,16+0,72:0,9\\ =3+0,3+30+0,8\\ =34,1\end{array}$