Математика 3 класс Г.В.Дорофеев, Т.Н.Миракова, Т.Б.Бука

Математика 3 класс Г.В.Дорофеев, Т.Н.Миракова, Т.Б.Бука

авторы: , , .
издательство: "Просвещение" 2015 год

Раздел:

Номер №9

Выполни действия:
750 : 5 + 280;
900 : 6120;
640 : 4 + 390;
680 : 4 + 70;
900570 : 3;
510 : 3 + 90;
(430280) * 5;
(810530) * 2;
(730190) : 6;
3 * 120 + 3 * 12;
170 * 54 * 17;
880 : 4 + 3 * 180.

Решение

750 : 5 + 280 = 150 + 280 = 430
1)
$\snippet{name: long_division, x: 750, y: 5}$
;
2)
$\snippet{name: op_column, sign: '+', x: '150', y: '280', z: '430'}$
.
 
900 : 6120 = 150120 = 30
1)
$\snippet{name: long_division, x: 900, y: 6}$
;
2)
$\snippet{name: op_column, sign: '-', x: '150', y: '120', z: '30'}$
.
 
640 : 4 + 390 = 160 + 390 = 550
1)
$\snippet{name: long_division, x: 640, y: 4}$
;
2)
$\snippet{name: op_column, sign: '+', x: '160', y: '390', z: '550'}$
.
 
680 : 4 + 70 = 170 + 70 = 240
1)
$\snippet{name: long_division, x: 680, y: 4}$
;
2)
$\snippet{name: op_column, sign: '+', x: '170', y: '70', z: '240'}$
.
 
900570 : 3 = 900190 = 710
1)
$\snippet{name: long_division, x: 570, y: 3}$
;
2)
$\snippet{name: op_column, sign: '-', x: '900', y: '190', z: '710'}$
.
 
510 : 3 + 90 = 170 + 90 = 260
1)
$\snippet{name: long_division, x: 510, y: 3}$
;
2)
$\snippet{name: op_column, sign: '+', x: '170', y: '90', z: '260'}$
.
 
(430280) * 5 = 150 * 5 = 750
1)
$\snippet{name: op_column, sign: '-', x: '430', y: '280', z: '150'}$
;
2)
$\snippet{name: column_multiplication, x: 150, y: 5}$
.
 
(810530) * 2 = 280 * 2 = 560
1)
$\snippet{name: op_column, sign: '-', x: '810', y: '530', z: '280'}$
;
2)
$\snippet{name: column_multiplication, x: 280, y: 2}$
.
 
(730190) : 6 = 540 : 6 = 90
1)
$\snippet{name: op_column, sign: '-', x: '730', y: '190', z: '540'}$
;
2)
$\snippet{name: long_division, x: 540, y: 6}$
.
 
3 * 120 + 3 * 12 = 360 + 36 = 396
1)
$\snippet{name: column_multiplication, x: 120, y: 3}$
;
2)
$\snippet{name: column_multiplication, x: 12, y: 3}$
;
3)
$\snippet{name: op_column, sign: '+', x: '360', y: '36', z: '396'}$
.
 
170 * 54 * 17 = 85068 = 782
1)
$\snippet{name: column_multiplication, x: 170, y: 5}$
;
2)
$\snippet{name: column_multiplication, x: 17, y: 4}$
;
3)
$\snippet{name: op_column, sign: '-', x: '850', y: '68', z: '782'}$
.
 
880 : 4 + 3 * 180 = 220 + 540 = 760
1)
$\snippet{name: long_division, x: 880, y: 4}$
;
2)
$\snippet{name: column_multiplication, x: 180, y: 3}$
;
3)
$\snippet{name: op_column, sign: '+', x: '220', y: '540', z: '760'}$
.