如题所述
第1个回答 2016-12-08
25x45
=25x4x(45÷4)
=100x11.25
=1125
25x45
=45x5x5
=225x5
=1125
谢谢,请采纳
=25x4x(45÷4)
=100x11.25
=1125
25x45
=45x5x5
=225x5
=1125
谢谢,请采纳
第2个回答 2016-12-08
25x45
=25x(40+5)
=(25 x40)+ (25 x 5 )
=1000 + 25
=1025
25x45
=45 x (20+ 5 )
=20x45 +5x45
=900 + 125
=1025
=25x(40+5)
=(25 x40)+ (25 x 5 )
=1000 + 25
=1025
25x45
=45 x (20+ 5 )
=20x45 +5x45
=900 + 125
=1025
第3个回答 2016-12-08
25x45
=25x40 +25x5
=1000+125
=1125
25x45
=20x45 +5x45
=900 +225
=1125本回答被网友采纳
=25x40 +25x5
=1000+125
=1125
25x45
=20x45 +5x45
=900 +225
=1125本回答被网友采纳