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.

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