发布网友 发布时间:2024-10-23 20:43
共4个回答
热心网友 时间:2024-11-13 19:56
简便计算过程如下
5.5×0.8+2.4×1.5
=5.5×0.8+0.8×3×1.5
=5.5×0.8+0.8×4.5
=0.8×(5.5+4.5)
=0.8×10
=8
望采纳
热心网友 时间:2024-11-13 19:53
5.5*0.8+2.4*1.5
=5.5*0.8+0.8*3*1.5
=5.5*0.8+0.8*4.5
=0.8*(5.5+4.5)
=0.8*10
=8
热心网友 时间:2024-11-13 19:55
原式=0.8ⅹ(5.5+3x1.5)
=0.8ⅹ(5.5+4.5)
=0.8ⅹ10
=8
热心网友 时间:2024-11-13 19:55
5.5×0.8+2.4×1.5
=(5+0.5)×0.8+2.4×(1+0.5)
=4+0.4+2.4+1.2
=4+4
=8