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.