72×26+ 36×28
=(36x2)x26+36x28
=36x(52+28)
=36x80
=2880
希望能帮到你!
72×26+ 36×28
=(36x2)x26+36x28
=36x(52+28)
=36x80
=2880
72×26+ 36×28
=36×(2×26+28)
=36×(52+28)
=36×90
=3240
72×26+ 36×28
=36x2x26+36x28
=36x(2x26)+36x28
=36x52+36x28
=36x(52+28)
=36x80
=2880