Математика 4 класс Моро, Бантова часть 1, 2 Номер 6

408 * 270 + 21008 : 808 = 110160 + 26 = 110186
1)

\begin{array}{r} \times \underline{\begin{array}{r} 408 \\ 27 \end{array}} \\ 2856 \\ 816 \\ \bar{11016} \end{array}

;
2)

\begin{matrix} \begin{array}{l} \underline{} 21008 \\ \underline{1616} \\ \underline{} 4848 \\ \underline{4848} \\ 0 \end{array} & \begin{array}{l} 808 \\ \bar{26} \end{array} \end{matrix}

;
3) 110160 + 26 = 110186.

71370 : 234 + 695 * 50 = 305 + 34750 = 35055
1)

\begin{matrix} \begin{array}{l} \underline{} 71370 \\ \underline{702} \\ \underline{} 117 \\ \underline{0} \\ \underline{} 1170 \\ \underline{1170} \\ 0 \end{array} & \begin{array}{l} 234 \\ \bar{305} \end{array} \end{matrix}

;
2)

\begin{array}{r} \times \underline{\begin{array}{r} 695 \\ 5 \end{array}} \\ 3475 \end{array}

;
3)

\begin{array}{r} \begin{array}{r} + \end{array} \begin{array}{r} 34750 \\ 305 \end{array} \\ \begin{array}{r} 35055 \end{array} \end{array}

.

280084 : 28 − 125 * 8 = 10003 − 1000 = 9003
1)

\begin{matrix} \begin{array}{l} \underline{} 280084 \\ \underline{28} \\ \underline{} 0 \\ \underline{0} \\ \underline{} 0 \\ \underline{0} \\ \underline{} 8 \\ \underline{0} \\ \underline{} 84 \\ \underline{84} \\ 0 \end{array} & \begin{array}{l} 28 \\ \bar{10003} \end{array} \end{matrix}

;
2)

\begin{array}{r} \times \underline{\begin{array}{r} 128 \\ 8 \end{array}} \\ 1024 \end{array}

;
3)

\begin{array}{r} \begin{array}{r} - \end{array} \begin{array}{r} 10003 \\ 1000 \end{array} \\ \begin{array}{r} 9003 \end{array} \end{array}

.

(327 + 541350 : 450) : 3 = (327 + 1203) : 3 = 1530 : 3 = 510
1)

\begin{matrix} \begin{array}{l} \underline{} 541350 \\ \underline{450} \\ \underline{} 913 \\ \underline{900} \\ \underline{} 135 \\ \underline{0} \\ \underline{} 1350 \\ \underline{1350} \\ 0 \end{array} & \begin{array}{l} 450 \\ \bar{1203} \end{array} \end{matrix}

;
2)

\begin{array}{r} \begin{array}{r} + \end{array} \begin{array}{r} 1203 \\ 327 \end{array} \\ \begin{array}{r} 1530 \end{array} \end{array}

;
3)

\begin{matrix} \begin{array}{l} \underline{} 1530 \\ \underline{15} \\ \underline{} 3 \\ \underline{3} \\ \underline{} 0 \\ \underline{0} \\ 0 \end{array} & \begin{array}{l} 3 \\ \bar{510} \end{array} \end{matrix}

.

(31460 + 1040) : (150 − 2400 : 120) = 32500 : (150 − 20) = 32500 : 130 = 250
1)

\begin{array}{r} \begin{array}{r} + \end{array} \begin{array}{r} 31460 \\ 1040 \end{array} \\ \begin{array}{r} 32500 \end{array} \end{array}

;
2) 2400 : 120 = 20;
3) 150 − 20 = 130;
4)

\begin{matrix} \begin{array}{l} \underline{} 32500 \\ \underline{260} \\ \underline{} 650 \\ \underline{650} \\ \underline{} 0 \\ \underline{0} \\ 0 \end{array} & \begin{array}{l} 130 \\ \bar{250} \end{array} \end{matrix}

.

(78213 − 75209) * 207 − 45 * 308 = 3004 * 207 − 13860 = 621828 − 13860 = 607968
1)

\begin{array}{r} \begin{array}{r} - \end{array} \begin{array}{r} 78213 \\ 75209 \end{array} \\ \begin{array}{r} 3004 \end{array} \end{array}

;
2)

\begin{array}{r} \times \underline{\begin{array}{r} 3004 \\ 207 \end{array}} \\ 21028 \\ 0 \\ 6008 \\ \bar{621828} \end{array}

;
3)

\begin{array}{r} \times \underline{\begin{array}{r} 308 \\ 45 \end{array}} \\ 1540 \\ 1232 \\ \bar{13860} \end{array}

;
4)

\begin{array}{r} \begin{array}{r} - \end{array} \begin{array}{r} 621828 \\ 13860 \end{array} \\ \begin{array}{r} 607968 \end{array} \end{array}

.

(992341 : 269 + 780) − 325 : 5 = (3689 + 780) − 325 : 5 = 4469 − 65 = 4404
1)

\begin{matrix} \begin{array}{l} \underline{} 992341 \\ \underline{807} \\ \underline{} 1853 \\ \underline{1614} \\ \underline{} 2394 \\ \underline{2152} \\ \underline{} 2421 \\ \underline{2421} \\ 0 \end{array} & \begin{array}{l} 269 \\ \bar{3689} \end{array} \end{matrix}

;
2)

\begin{array}{r} \begin{array}{r} + \end{array} \begin{array}{r} 3689 \\ 780 \end{array} \\ \begin{array}{r} 4469 \end{array} \end{array}

;
3)

\begin{matrix} \begin{array}{l} \underline{} 325 \\ \underline{30} \\ \underline{} 25 \\ \underline{25} \\ 0 \end{array} & \begin{array}{l} 5 \\ \bar{65} \end{array} \end{matrix}

;
4) 4469 − 65 = 4404.

434280 : 517 * 306 + 27449 = 840 * 306 + 27449 = 257040 + 27449 = 284489
1)

\begin{matrix} \begin{array}{l} \underline{} 434280 \\ \underline{4136} \\ \underline{} 2068 \\ \underline{2068} \\ \underline{} 0 \\ \underline{0} \\ 0 \end{array} & \begin{array}{l} 517 \\ \bar{840} \end{array} \end{matrix}

;
2)

\begin{array}{r} \times \underline{\begin{array}{r} 306 \\ 84 \end{array}} \\ 1224 \\ 2448 \\ \bar{25704} \end{array}

;
3)

\begin{array}{r} \begin{array}{r} + \end{array} \begin{array}{r} 257040 \\ 27449 \end{array} \\ \begin{array}{r} 284489 \end{array} \end{array}

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