如题所述
第1个回答 2020-03-03
解:原式=(100-2)X25
=100x25-2x25
=2500-50
=2450本回答被网友采纳
=100x25-2x25
=2500-50
=2450本回答被网友采纳
第2个回答 2020-05-16
原式=49x2x25
=49x50
=50x50-50
=2500-50
=2450
=49x50
=50x50-50
=2500-50
=2450
第3个回答 2020-03-03
98×25
=(100-2)×25
=2500-50
=2450
=(100-2)×25
=2500-50
=2450