如题所述
第1个回答 2020-04-20
简便计算
200×98
=200x(100-2)
=200x100-200x2
=20000-400
=19600本回答被网友采纳
200×98
=200x(100-2)
=200x100-200x2
=20000-400
=19600本回答被网友采纳
第2个回答 2020-04-20
原式=200×(100-2)
=20000-400
=19600
=20000-400
=19600