Obliczymy pisemnie wyniki podanych działań.

a)

$\begin{array}{r}3\stackrel{3}{\cancel{4}}\stackrel{14}{\stackrel{4}{\cancel{5}}},\stackrel{\cancel{12}}{\cancel{2}}7\\ \underline{-8,31}\\ 336,96\end{array}$

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b)

$\begin{array}{c}2\stackrel{1}{3}6,20\\ \underline{+39,19}\\ 275,39\end{array}$

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c)

$\begin{array}{r}2\stackrel{6}{\cancel{7}},\stackrel{9}{\stackrel{\cancel{10}}{\cancel{0}}}\stackrel{9}{\stackrel{\cancel{10}}{\cancel{0}}}\stackrel{10}{\cancel{0}}\\ \underline{-4,251}\\ 22,749\end{array}$

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d)

$\begin{array}{r}\stackrel{7}{\cancel{8}},\stackrel{17}{\cancel{7}}12\\ \underline{-0,9}\\ 7,812\end{array}$

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e)

$\begin{array}{c}\stackrel{1}{}\stackrel{1}{2}\stackrel{1}{7},\stackrel{1}{8}61\\ \underline{+172,540}\\ 200,401\end{array}$

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f)

$\begin{array}{r}2\stackrel{\cancel{5}}{\cancel{6}},\stackrel{9}{\stackrel{\cancel{10}}{\cancel{0}}}\stackrel{\cancel{10}}{\cancel{0}}0\\ \underline{-0,761}\\ 25,240\end{array}$