如题所述
第1个回答 2020-04-07
简便计算过程方法如下
解:49x98
=49×(100-2)
=49×100-2×49
=4900-98
=4802
解:49x98
=49×(100-2)
=49×100-2×49
=4900-98
=4802
第2个回答 2020-03-01
(50−1)×(100−2)=5000−100−100+2=4802
第3个回答 2020-03-01
49×98
=49×(100-2)
=49×100-49×2
=4900-98
=4802本回答被网友采纳
=49×(100-2)
=49×100-49×2
=4900-98
=4802本回答被网友采纳