问题
解答题
简便计算.
|
答案
(1)576+38+162+124,
=(576+124)+(38+162),
=700+200,
=900;
(2)125×56,
=125×8×7,
=1000×7,
=7000;
(3)99×87+87,
=(99+1)×87,
=100×87,
=8700;
(4)96×27+27×4,
=(96+4)×27,
=100×27,
=2700.
简便计算.
|
(1)576+38+162+124,
=(576+124)+(38+162),
=700+200,
=900;
(2)125×56,
=125×8×7,
=1000×7,
=7000;
(3)99×87+87,
=(99+1)×87,
=100×87,
=8700;
(4)96×27+27×4,
=(96+4)×27,
=100×27,
=2700.