456 − 184;
527 − 519;
731 − 403;
166 + 334;
292 + 468;
440 + 196;
360 − 60 − 30;
670 − 10 − 70;
720 − 200 + 50.

456 − 184 = 272
$\snippet{name: op_column, sign: '-', x: '456', y: '184', z: '272'}$
527 − 519 = 8
$\snippet{name: op_column, sign: '-', x: '527', y: '519', z: '8'}$
731 − 403 = 328
$\snippet{name: op_column, sign: '-', x: '731', y: '403', z: '328'}$
166 + 334 = 500
$\snippet{name: op_column, sign: '+', x: '166', y: '334', z: '500'}$
292 + 468 = 760
$\snippet{name: op_column, sign: '+', x: '292', y: '468', z: '760'}$
440 + 196 = 636
$\snippet{name: op_column, sign: '+', x: '440', y: '196', z: '636'}$
360 − 60 − 30 = 300 − 30 = 270
670 − 10 − 70 = 660 − 70 = 590
720 − 200 + 50 = 520 + 50 = 570