问题 解答题
递等式计算.(能简便的要简便计算,并写出主要过程)
628-46+454164+36÷3×16(80-1)×125
(49+49+49+49)×25045×54+45×45+4525×[364÷(201-173)].
答案

(1)628-46+454,

=582+454,

=1036;

(2)164+36÷3×16,

=164+12×16,

=164+192,

=356;

(3)(80-1)×125,

=80×125-1×125,

=10000-125,

=9875;

(4)(49+49+49+49)×250,

=(49×4)×250,

=49×(4×25),

=49×100,

=4900;

(5)45×54+45×45+45,

=45×(54+45+1),

=45×100,

=4500;

(6)25×[364÷(201-173)],

=25×[364÷28],

=25×13,

=325.

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