1) 3,76 + 3,44 = 7,2

2) 7,2 : 0,18 = 40
$\begin{array}{cc}\begin{array}{l}\underset{¯}{\phantom{0}}720\\ \phantom{0}\underset{¯}{72}\\ \phantom{00}\underset{¯}{\phantom{0}}0\\ \phantom{000}\underset{¯}{0}\\ \phantom{000}0\end{array}& \begin{array}{l}\overline{)18}\\ \overline{\overline{)40}}\end{array}\end{array}$
3) 40 − 15,82 = 24,18


(3,76 + 3,44) : 0,18 − 15,82 = 24,18

1) 3,8 * 3,5 = 13,3

2) 7,35 : 0,75 = 9,8
$\begin{array}{cc}\begin{array}{l}\underset{¯}{\phantom{0}}735\\ \phantom{0}\underset{¯}{675}\\ \phantom{0}\underset{¯}{\phantom{0}}600\\ \phantom{00}\underset{¯}{600}\\ \phantom{0000}0\end{array}& \begin{array}{l}\overline{)75}\\ \overline{\overline{)\mathrm{9,8}}}\end{array}\end{array}$
3) 13,3 − 9,8 = 3,5

4) 3,5 : 1,4 = 2,5
$\begin{array}{cc}\begin{array}{l}\underset{¯}{\phantom{0}}35\\ \phantom{0}\underset{¯}{28}\\ \phantom{0}\underset{¯}{\phantom{0}}70\\ \phantom{00}\underset{¯}{70}\\ \phantom{000}0\end{array}& \begin{array}{l}\overline{)14}\\ \overline{\overline{)\mathrm{2,5}}}\end{array}\end{array}$

(3,8 * 3,5 − 7,35 : 0,75) : 1,4 = 2,5