Вычислите устно:
а) $\snippet{name: op_column_rows, args: ['270 - 214', ': 28', '* 37', '+ 26'], solution: '?'}$;
б) $\snippet{name: op_column_rows, args: ['100 : 25', '* 15', ': 120', '* 180'], solution: '?'}$;
в) $\snippet{name: op_column_rows, args: ['6 - 1,2', ': 8', '* 10', ': 5'], solution: '?'}$;
г) $\snippet{name: op_column_rows, args: ['1 - 0,79', ': 0,3', '+ 5,3', ': 1,5'], solution: '?'}$;
д) $\snippet{name: op_column_rows, args: ['9 - 4,5', ': 1,5', '* 1,7', '+ 4,9'], solution: '?'}$.