问题 解答题
脱式计算
(52-39)×26728-(660+145÷29)(75+360)÷(20-5)300-225÷5+145.
答案

(1)(52-39)×26,

=13×26,

=338;

(2)728-(660+145÷29),

=728-(660+5),

=728-665,

=63;

(3)(75+360)÷(20-5),

=435÷15,

=29;

(4)300-225÷5+145,

=300-45+145,

=300+100,

=400.

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