Wykonajmy działania

a)

$\begin{array}{r}\stackrel{1}{5},84\\ 7,60\\ \underline{+8,50}\\ 21,94\end{array}$

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$\begin{array}{r}\stackrel{1}{1}\stackrel{1}{4},\stackrel{1}{5}7\\ 0,30\\ \underline{+7,65}\\ 22,52\end{array}$

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$\begin{array}{r}5,\stackrel{1}{4}\stackrel{1}{6}8\\ 9,060\\ \underline{+2,243}\\ 16,771\end{array}$

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$\begin{array}{r}\stackrel{1}{3}\stackrel{1}{5},\stackrel{1}{0}80\\ 25,574\\ \underline{+8,720}\\ 69,374\end{array}$

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b)

$\begin{array}{r}\stackrel{1}{1}\stackrel{1}{9},25\\ 106,70\\ \underline{+3,80}\\ 129,75\end{array}$

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$\begin{array}{r}\stackrel{1}{}3,58\\ 26,40\\ \underline{+17,00}\\ 46,98\end{array}$

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$\begin{array}{r}\stackrel{1}{1}\stackrel{1}{5},\stackrel{1}{0}0\\ 0,67\\ \underline{+18,94}\\ 34,61\end{array}$