(1)67×12+67×35+67×53,
=67×(12+35+53),
=67×100,
=6700;
(2)374+101,
=374+100+1,
=475;
(3)125+56,
=125+55+1,
=181;
(4)128-72+28,
=100-72+28+28,
=28+28+28,
=28×3,
=84;
(5)3000÷25÷4,
=3000÷(25×4),
=3000÷100,
=30.
(1)67×12+67×35+67×53,
=67×(12+35+53),
=67×100,
=6700;
(2)374+101,
=374+100+1,
=475;
(3)125+56,
=125+55+1,
=181;
(4)128-72+28,
=100-72+28+28,
=28+28+28,
=28×3,
=84;
(5)3000÷25÷4,
=3000÷(25×4),
=3000÷100,
=30.