如题所述
第1个回答 2013-09-24
7.8x5.6+2.3x4.4
=7.8x5.6+2.2x5.6
=5.6x(7.8+2.2)
=5.6x10
=56
=7.8x5.6+2.2x5.6
=5.6x(7.8+2.2)
=5.6x10
=56
第2个回答 2013-09-24
7.8x5.6+2.3x4.4
=4*(7.8*1.6+2.3*1.1)
=4*(12.48*2.53)
=4*15.01
=60.04本回答被网友采纳
=4*(7.8*1.6+2.3*1.1)
=4*(12.48*2.53)
=4*15.01
=60.04本回答被网友采纳
