а) (48851 − 17896 − 8050) : 45 − (574 * 407 + 8273) : 809;
б) 40040 : (1402 − 1272) * 8050 − (800000 − 586 * 604 + 1314) : 913.

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ГДЗ учебник по математике 4 класс Петерсон. 30 урок. Формула одновременного движения. Номер №13

(48851 \overset{1}{-} 17896 \overset{2}{-} 8050) \overset{5}{:} 45 \overset{7}{-} (574 \overset{3}{*} 407 \overset{4}{+} 8273) \overset{6}{:} 809 = (30955 - 8050) : 45 - (233618 + 8273) : 809 = 22905 : 45 - 241891 : 809 = 509 - 299 = 210

\begin{array}{r} \begin{array}{r} - \end{array} \begin{array}{r} 48851 \\ 17896 \end{array} \\ \begin{array}{r} 30955 \end{array} \end{array}

;
2)

\begin{array}{r} \begin{array}{r} - \end{array} \begin{array}{r} 30955 \\ 8050 \end{array} \\ \begin{array}{r} 22905 \end{array} \end{array}

;
3)

\begin{array}{r} \times \underline{\begin{array}{r} 574 \\ 407 \end{array}} \\ 4018 \\ 0 \\ 2296 \\ \bar{233618} \end{array}

;
4)

\begin{array}{r} \begin{array}{r} + \end{array} \begin{array}{r} 233618 \\ 8273 \end{array} \\ \begin{array}{r} 241891 \end{array} \end{array}

;
5)

\begin{matrix} \begin{array}{l} \underline{} 22905 \\ \underline{225} \\ \underline{} 40 \\ \underline{0} \\ \underline{} 405 \\ \underline{405} \\ 0 \end{array} & \begin{array}{l} 45 \\ \bar{509} \end{array} \end{matrix}

;
6)

\begin{matrix} \begin{array}{l} \underline{} 241891 \\ \underline{1618} \\ \underline{} 8009 \\ \underline{7281} \\ \underline{} 7281 \\ \underline{7281} \\ 0 \end{array} & \begin{array}{l} 809 \\ \bar{299} \end{array} \end{matrix}

;
7)

\begin{array}{r} \begin{array}{r} - \end{array} \begin{array}{r} 509 \\ 299 \end{array} \\ \begin{array}{r} 210 \end{array} \end{array}

40040 \overset{5}{:} (1402 \overset{1}{-} 1272) \overset{6}{*} 8050 \overset{8}{-} (800000 \overset{3}{-} 586 \overset{2}{*} 604 \overset{4}{+} 1314) \overset{7}{:} 913 = 40040 : 130 * 8050 - (800000 - 353944 + 1314) : 913 = 308 * 8050 - (446056 + 1314) : 913 = 2479400 - 447370 : 913 = 2479400 - 490 = 2478910

\begin{array}{r} \begin{array}{r} - \end{array} \begin{array}{r} 1402 \\ 1272 \end{array} \\ \begin{array}{r} 130 \end{array} \end{array}

;
2)

\begin{array}{r} \times \underline{\begin{array}{r} 586 \\ 604 \end{array}} \\ 2344 \\ 0 \\ 3516 \\ \bar{353944} \end{array}

;
3)

\begin{array}{r} \begin{array}{r} - \end{array} \begin{array}{r} 800000 \\ 353944 \end{array} \\ \begin{array}{r} 446056 \end{array} \end{array}

;
4)

\begin{array}{r} \begin{array}{r} + \end{array} \begin{array}{r} 446056 \\ 1314 \end{array} \\ \begin{array}{r} 447370 \end{array} \end{array}

;
5)

\begin{matrix} \begin{array}{l} \underline{} 40040 \\ \underline{390} \\ \underline{} 104 \\ \underline{0} \\ \underline{} 1040 \\ \underline{1040} \\ 0 \end{array} & \begin{array}{l} 130 \\ \bar{308} \end{array} \end{matrix}

;
6)

\begin{array}{r} \times \underline{\begin{array}{r} 8050 \\ 308 \end{array}} \\ 64400 \\ 0 \\ 24150 \\ \bar{2479400} \end{array}

;
7)

\begin{matrix} \begin{array}{l} \underline{} 447370 \\ \underline{3652} \\ \underline{} 8217 \\ \underline{8217} \\ \underline{} 0 \\ \underline{0} \\ 0 \end{array} & \begin{array}{l} 913 \\ \bar{490} \end{array} \end{matrix}

;
8)

\begin{array}{r} \begin{array}{r} - \end{array} \begin{array}{r} 2479400 \\ 490 \end{array} \\ \begin{array}{r} 2478910 \end{array} \end{array}

ГДЗ Математика 4 класс Петерсон ,