第1个回答 2016-03-30
25x28
=25x4x7
=100x7
=700
25x28
=28x100/4
=2800/4
=700
25x28
=25x30-25x2
=750-50
=700
25x28
=28x30-28x5
=840-140
=700本回答被提问者采纳
第2个回答 2020-06-17
25X(20十8)
=25X20十25X8
=500十20O
=700
第3个回答 2019-04-20
25x28 =25x30-25x2 =750-50 =700
第4个回答 2020-05-07
25x28
=25x4x7
=100x7
=700