Математика 4 класс Г.В. Дорофеев, Т.Н. Миракова, Т.Б. Бука Номер 4

576 : 6 * 8 − 200 : 8 * 5 = 96 * 8 − 25 * 5 = 768 − 125 = 643

\begin{matrix} \begin{array}{l} \underline{} 576 \\ \underline{54} \\ \underline{} 36 \\ \underline{36} \\ 0 \end{array} & \begin{array}{l} 6 \\ \bar{96} \end{array} \end{matrix}

\begin{array}{r} \times \underline{\begin{array}{r} 96 \\ 8 \end{array}} \\ 768 \end{array}

200 : 8 = 25;

25 * 5 = 125

\begin{array}{r} \begin{array}{r} - \end{array} \begin{array}{r} 768 \\ 125 \end{array} \\ \begin{array}{r} 643 \end{array} \end{array}

300 : 4 : 25 + 679 : 7 = 75 : 25 + 97 = 3 + 97 = 100

\begin{matrix} \begin{array}{l} \underline{} 300 \\ \underline{28} \\ \underline{} 20 \\ \underline{20} \\ 0 \end{array} & \begin{array}{l} 4 \\ \bar{75} \end{array} \end{matrix}

75 : 25 = 3

\begin{matrix} \begin{array}{l} \underline{} 679 \\ \underline{63} \\ \underline{} 49 \\ \underline{49} \\ 0 \end{array} & \begin{array}{l} 7 \\ \bar{97} \end{array} \end{matrix}

3 + 97 = 100

(868 : 7 + 92) : 3 − 156 : 4 = (124 + 92) : 3 − 39 = 216 : 3 − 39 = 72 − 39 = 33

\begin{matrix} \begin{array}{l} \underline{} 868 \\ \underline{7} \\ \underline{} 16 \\ \underline{14} \\ \underline{} 28 \\ \underline{28} \\ 0 \end{array} & \begin{array}{l} 7 \\ \bar{124} \end{array} \end{matrix}

\begin{array}{r} \begin{array}{r} + \end{array} \begin{array}{r} 124 \\ 92 \end{array} \\ \begin{array}{r} 216 \end{array} \end{array}

\begin{matrix} \begin{array}{l} \underline{} 216 \\ \underline{21} \\ \underline{} 6 \\ \underline{6} \\ 0 \end{array} & \begin{array}{l} 3 \\ \bar{72} \end{array} \end{matrix}

\begin{matrix} \begin{array}{l} \underline{} 156 \\ \underline{12} \\ \underline{} 36 \\ \underline{36} \\ 0 \end{array} & \begin{array}{l} 4 \\ \bar{39} \end{array} \end{matrix}

\begin{array}{r} \begin{array}{r} - \end{array} \begin{array}{r} 72 \\ 39 \end{array} \\ \begin{array}{r} 33 \end{array} \end{array}

432 : 6 : (53 * 4 − 1000 : 5) = 72 : (212 − 200) = 72 : 12 = 6

\begin{array}{r} \times \underline{\begin{array}{r} 53 \\ 4 \end{array}} \\ 212 \end{array}

\begin{matrix} \begin{array}{l} \underline{} 1000 \\ \underline{10} \\ \underline{} 0 \\ \underline{0} \\ \underline{} 0 \\ \underline{0} \\ 0 \end{array} & \begin{array}{l} 5 \\ \bar{200} \end{array} \end{matrix}

212 − 200 = 12

\begin{matrix} \begin{array}{l} \underline{} 432 \\ \underline{42} \\ \underline{} 12 \\ \underline{12} \\ 0 \end{array} & \begin{array}{l} 6 \\ \bar{72} \end{array} \end{matrix}

72 : 12 = 6

ГДЗ учебник по математике 4 класс Г.В. Дорофеев, Т.Н. Миракова, Т.Б. Бука