17370 : 45 * 67;
540 * 72 : 40 : 9;
36075 : 37 * 25;
39900 : 2 * 12;
1131 : 13;
1092 : 14.

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Математика 4 класс Моро. Часть 2. Страница 70. Номер №18

17370 : 45 * 67 = 386 * 67 = 25862
1)

\begin{matrix} \begin{array}{l} \underline{} 17370 \\ \underline{135} \\ \underline{} 387 \\ \underline{360} \\ \underline{} 270 \\ \underline{270} \\ 0 \end{array} & \begin{array}{l} 45 \\ \bar{386} \end{array} \end{matrix}

;
2)

\begin{array}{r} \times \underline{\begin{array}{r} 386 \\ 67 \end{array}} \\ 2702 \\ 2316 \\ \bar{25862} \end{array}

.

540 * 72 : 40 : 9 = 38880 : 40 : 9 = 972 : 9 = 108
1)

\begin{array}{r} \times \underline{\begin{array}{r} 54 \\ 72 \end{array}} \\ 108 \\ 378 \\ \bar{3888} \end{array}

;
2)

\begin{matrix} \begin{array}{l} \underline{} 38880 \\ \underline{360} \\ \underline{} 288 \\ \underline{280} \\ \underline{} 80 \\ \underline{80} \\ 0 \end{array} & \begin{array}{l} 40 \\ \bar{972} \end{array} \end{matrix}

;
3)

\begin{matrix} \begin{array}{l} \underline{} 972 \\ \underline{9} \\ \underline{} 7 \\ \underline{0} \\ \underline{} 72 \\ \underline{72} \\ 0 \end{array} & \begin{array}{l} 9 \\ \bar{108} \end{array} \end{matrix}

.

36075 : 37 * 25 = 975 * 25 = 24375
1)

\begin{matrix} \begin{array}{l} \underline{} 36075 \\ \underline{333} \\ \underline{} 277 \\ \underline{259} \\ \underline{} 185 \\ \underline{185} \\ 0 \end{array} & \begin{array}{l} 37 \\ \bar{975} \end{array} \end{matrix}

;
2)

\begin{array}{r} \times \underline{\begin{array}{r} 975 \\ 25 \end{array}} \\ 4875 \\ 1950 \\ \bar{24375} \end{array}

.

39900 : 2 * 12 = 1596 * 12 = 19152
1)

\begin{matrix} \begin{array}{l} \underline{} 39900 \\ \underline{2} \\ \underline{} 19 \\ \underline{18} \\ \underline{} 19 \\ \underline{18} \\ \underline{} 10 \\ \underline{10} \\ \underline{} 0 \\ \underline{0} \\ 0 \end{array} & \begin{array}{l} 2 \\ \bar{19950} \end{array} \end{matrix}

;
2)

\begin{array}{r} \times \underline{\begin{array}{r} 1596 \\ 12 \end{array}} \\ 3192 \\ 1596 \\ \bar{19152} \end{array}

.

1131 : 13 = 87

\begin{matrix} \begin{array}{l} \underline{} 1131 \\ \underline{104} \\ \underline{} 91 \\ \underline{91} \\ 0 \end{array} & \begin{array}{l} 13 \\ \bar{87} \end{array} \end{matrix}

1092 : 14 = 78

\begin{matrix} \begin{array}{l} \underline{} 1092 \\ \underline{98} \\ \underline{} 112 \\ \underline{112} \\ 0 \end{array} & \begin{array}{l} 14 \\ \bar{78} \end{array} \end{matrix}

ГДЗ Математика 4 класс Моро, Бантова часть 1, 2