Задание 14

Вычислите:

$${\largeа)}\ 7326+359;$$
$${\largeб)}\ 5321-985;$$
$${\largeв)}\ 424\cdot27;$$

$${\largeг)}\ 15\ 795:39;$$
$${\largeд)}\ 732\cdot254-8145:45+314\ 253.$$

Источник заимствования: Алгебра. 7 класс. Учебник для общеобразовательных организаций / С.М. Никольский, М.К. Потапов, Н.Н. Решетников, А.В. Шевкин – Просвещение, 2013. – 6 c. ISBN 978-5-09-027739-6

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Решение:

$${\largeа)}\ 7326+359=7685$$

$$\begin{array}{r}+\begin{array}{r}7326\\359\\\hline\end{array}\\\begin{array}{r}7685\end{array}\end{array}$$

$${\largeб)}\ 5321-985=4336$$

$$\begin{array}{r}-\begin{array}{r}5321\\985\\\hline\end{array}\\\begin{array}{r}4336\end{array}\end{array}$$

$${\largeв)}\ 424\cdot27=11\ 448$$

$$\begin{array}{r}\times\begin{array}{r}424\\27\\\hline\end{array}\phantom{0}\\\begin{array}{r}+\begin{array}{r}2968\\848\phantom{0}\\\hline\end{array}\\\begin{array}{r}11448\end{array}\end{array}\end{array}$$

$${\largeг)}\ 15\ 795:39=405$$

$$\begin{array}{l}\begin{array}{r}-\begin{array}{l}15795\\156\\\hline\end{array}\begin{array}{|l}39\\\hline405\end{array}\\\end{array}\\\phantom{00}\begin{array}{r}-\begin{array}{r}19\\0\\\hline\end{array}\end{array}\\\phantom{00}\begin{array}{r}-\begin{array}{r}195\\195\\\hline\end{array}\end{array}\\\phantom{000000}\begin{array}{r}0\end{array}\end{array}$$

$${\largeд)}\ 732\cdot254-8145:45+314\ 253=185\ 928-8145:45+314\ 253=185\ 928-181+314\ 253=185\ 747+314\ 253=500\ 000$$

$$\begin{array}{}1)\\[13.5ex]\\\end{array}\begin{array}{r}\times\begin{array}{r}732\\254\\\hline\end{array}\phantom{0}\\\begin{array}{r}+\begin{array}{r}2928\\3660\phantom{0}\\1464\phantom{00}\\\hline\end{array}\\\begin{array}{r}185928\end{array}\end{array}\end{array}$$
$$\begin{array}{l}\begin{array}{}2)\\[0.2ex]\\\end{array}\begin{array}{r}-\begin{array}{l}8145\\45\\\hline\end{array}\begin{array}{|l}45\\\hline181\end{array}\\\end{array}\\\phantom{\ 00}\begin{array}{r}-\begin{array}{r}364\\360\\\hline\end{array}\end{array}\\\phantom{\ 0000}\begin{array}{r}-\begin{array}{r}45\\45\\\hline\end{array}\end{array}\\\phantom{\ 0000000}\begin{array}{r}0\end{array}\end{array}$$
$$\begin{array}{}3)\\[3.5ex]\\\end{array}\begin{array}{r}-\begin{array}{r}185928\\181\\\hline\end{array}\\\begin{array}{r}185747\end{array}\end{array}$$
$$\begin{array}{}4)\\[3.5ex]\\\end{array}\begin{array}{r}+\begin{array}{r}185747\\314253\\\hline\end{array}\\\begin{array}{r}500000\end{array}\end{array}$$

Задание 13Задание 15