问题
解答题
脱式计算
|
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.
脱式计算
|
(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.