(1)6.15+4.9-9.85,
=11.05-9.85,
=1.2;
(2)1500÷25÷4,
=1500÷(25×4),
=1500÷100,
=15;
(3)19.92-(14.37-5.43),
=19.92-8.94,
=10.98;
(4)432-(361+153÷17),
=432-(361+9),
=432-370,
=52;
(5)142+35×6-315,
=142+210-315,
=352-315,
=37;
(6)27×13+72×13+13,
=(27+72+1)×13,
=100×13,
=1300.