1) 106 + 8целых2/10 * 25/41 = 106 + 82/10 *25/41 =106 + 5 = 111
2)1+85/100*16/17 = 1+80/100 или 1+8/10=10/10+8/10=18/10 или 1целая 8/10
3) 55/81 : 44/135+107/12 = 275/132 + 107/12 = 275/132 + 1177/132 = 1452/132=11
4)16/7 - 303/400 : 707/800 = 16/7 - 606/707 = 1616/707 - 606/707 = 1010/707 = 1 целая 303/707