864 − 357; 160 − 48; 735 + 65; 610 − 200 + 10; 620 − 200 + 20; 630 − 200 + 30; 44 : 11 * 17; 80 : 16 * 9; 72 : 8 * 11.

3 классМатематика

864357;
16048;
735 + 65;
610200 + 10;
620200 + 20;
630200 + 30;
44 : 11 * 17;
80 : 16 * 9;
72 : 8 * 11.

StaticConfig

864 − 357; 160 − 48; 735 + 65; 610 − 200 + 10; 620 − 200 + 20; 630 − 200 + 30; 44 : 11 * 17; 80 : 16 * 9; 72 : 8 * 11.

Решение

$\snippet{name: op_column, sign: '-', x: '864', y: '357', z: '507'}$
 
$\snippet{name: op_column, sign: '-', x: '160', y: '48', z: '112'}$
 
$\snippet{name: op_column, sign: '+', x: '735', y: '65', z: '800'}$
 
610200 + 10 = 410 + 10 = 420
 
620200 + 20 = 420 + 20 = 440
 
630200 + 30 = 430 + 30 = 460
 
44 : 11 * 17 = 4 * 17 = 4 * (10 + 7) = 4 * 10 + 4 * 7 = 40 + 28 = 68
 
80 : 16 * 9 = 5 * 9 = 45
 
72 : 8 * 11 = 9 * 11 = 9 * (10 + 1) = 9 * 10 + 9 * 1 = 90 + 9 = 99