(1)124×16+176×16,
=(124+176)×16,
=300×16,
=4800;
(2)25-7.35-2.65,
=25-(7.35+2.65),
=25-10,
=15;
(3)5.4+3.2+4.6+6.8,
=(5.4+4.6)+(6.8+3.2),
=10+10,
=20;
(4)4800÷25÷4,
=4800÷(25×4),
=4800÷100,
=48.
(1)124×16+176×16,
=(124+176)×16,
=300×16,
=4800;
(2)25-7.35-2.65,
=25-(7.35+2.65),
=25-10,
=15;
(3)5.4+3.2+4.6+6.8,
=(5.4+4.6)+(6.8+3.2),
=10+10,
=20;
(4)4800÷25÷4,
=4800÷(25×4),
=4800÷100,
=48.