问题
解答题
55+45×12
(785+469)+(225+531)
125×25×320
467×18-18×267
48×(102+203÷7)
150÷[252÷(176-92)].
答案
(1)55+45×12,
=55+540,
=595;
(2)(785+469)+(225+531),
=(785+225)+(469+531),
=1000+1000,
=2000;
(3)125×25×320,
=125×25×(80×4),
=(125×80)×(25×4),
=10000×100,
=1000000;
(4)467×18-18×267,
=(467-267)×18,
=200×18,
=3600;
(5)48×(102+203÷7),
=48×(102+29),
=48×131,
=6288;
(6)150÷[252÷(176-92)],
=150÷[252÷84],
=150÷3,
=50.