问题 解答题

48×199+48

36×102

25×96×125   

28×36+48×54.

答案

(1)48×199+48,

=48×(199+1),

=48×200,

=9600;

(2)36×102,

=36×(100+2),

=36×100+36×2,

=3600+72,

=3672;

(3)25×96×125,

=25×4×8×3×125,

=(25×4)×(8×125)×3,

=100×1000×3,

=300000;

(4)28×36+48×54,

=28×36+6×8×6×9,

=28×36+36×72,

=(28+72)×36,

=100×36,

=3600.

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