Вычислите устно:
а) $\snippet{name: op_column_rows, args: ['25 * 3', ': 15', '+ 29', ': 17'], solution: '?'}$;
б) $\snippet{name: op_column_rows, args: ['15 * 4', '+ 16', ': 19', '- 4'], solution: '?'}$;
в) $\snippet{name: op_column_rows, args: ['100 : 25', '* 17', ': 2', '+ 26'], solution: '?'}$;
г) $\snippet{name: op_column_rows, args: ['16 * 3', '- 12', ': 12', '* 23'], solution: '?'}$;
д) $\snippet{name: op_column_rows, args: ['54 : 18', '+ 27', ': 15', '* 29'], solution: '?'}$.