912 − 756 = 156
$\snippet{name: op_column, sign: '-', x: 912, y: 756, z: 156}$
Проверка:
$\snippet{name: op_column, sign: '+', x: 756, y: 156, z: 912}$
 
184 + 552 = 736
$\snippet{name: op_column, sign: '+', x: 184, y: 552, z: 736}$
Проверка:
$\snippet{name: op_column, sign: '-', x: 736, y: 552, z: 184}$
 
329 * 3 = 987
$\snippet{name: column_multiplication, x: 329, y: 3}$
 
$\snippet{name: long_division, x: 987, y: 3}$
 
896 : 7 = 128
$\snippet{name: long_division, x: 896, y: 7}$
 
$\snippet{name: column_multiplication, x: 128, y: 7}$