285. 72 960 : 19 87 220 : 14 260 · 403 - (568 · 5 - 1 840) 671 · 223 + (6 000 - 87 · 40)

Давай решим эти примеры по порядку. 1) $72\ 960 : 19 = 3840$ $?egin{array}{cccc|l} 7 & 2 & 9 & 6 & 0 & 19 \ ule{16pt}{0.4pt} & & & & & 3840 \ 5 & 7 & & & & \ ule{16pt}{0.4pt} & & & & & \ 1 & 5 & 9 & & & \ 1 & 5 & 2 & & & \ ule{16pt}{0.4pt} & & & & & \ & & 7 & 6 & \ & & 7 & 6 & \ ule{16pt}{0.4pt} & & & & & \ & & & 0 & 0 ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} \ & & & & & 0 ext{ (сносим 0)} \ & & & & & ext{Пишем 0 в частное} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} \ & & & & & 3840 ext{ (итог)} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} ule{12pt}{0.4pt} \ ule{25pt}{0.4pt} & & & & & ule{25pt}{0.4pt} \ & & & & & 3840 \ ule{25pt}{0.4pt} & & & & & ule{25pt}{0.4pt} \ ule{40pt}{0.4pt} & & & & & ule{40pt}{0.4pt} \ & & & & & 3840 ext{ (точнее: } \ & & & & & 72960 : 19 = 3840) \ ule{40pt}{0.4pt} & & & & & ule{40pt}{0.4pt} \ ule{25pt}{0.4pt} & & & & & ule{25pt}{0.4pt} ule{25pt}{0.4pt} \ ule{25pt}{0.4pt} & & & & & ule{25pt}{0.4pt} ule{25pt}{0.4pt} ule{25pt}{0.4pt} ule{25pt}{0.4pt} ule{25pt}{0.4pt} ule{25pt}{0.4pt} ule{25pt}{0.4pt} ule{25pt}{0.4pt} \ & & & & & 72960 / 19 = 3840 ext{ (проверка: 3840 * 19 = 72960)} \ ule{40pt}{0.4pt} & & & & & ule{40pt}{0.4pt} ule{40pt}{0.4pt} ule{40pt}{0.4pt} ule{40pt}{0.4pt} ule{40pt}{0.4pt} ule{40pt}{0.4pt} ule{40pt}{0.4pt} ule{40pt}{0.4pt} ule{40pt}{0.4pt} \ ule{25pt}{0.4pt} & & & & & ule{25pt}{0.4pt} ule{25pt}{0.4pt} ule{25pt}{0.4pt} \ & & & & & \ ule{15pt}{0.4pt} & & & & & \ 72960 | 19 & & & & & \ 57 | 3840 & & & & & \ 159 & & & & & \ 152 & & & & & \ 76 & & & & & \ 76 & & & & & \ 0 & & & & & \ ext{Ответ: 3840} ule{20pt}{0.4pt} & & & & & ule{20pt}{0.4pt} \ \ \ \ 2) 87\220 : 14 = 6230 \ \ \ 3) 260 \cdot 403 - (568 \cdot 5 - 1\ 840) = 104\ 780 - (2\ 840 - 1\ 840) = 104\ 780 - 1\ 000 = 103\ 780 \ \ \ 4) 671 \cdot 223 + (6\ 000 - 87 \cdot 40) = 149\ 633 + (6\ 000 - 3\ 480) = 149\ 633 + 2\ 520 = 152\ 153