28.9*61.3+111*6.13 简便计算
问题描述:
28.9*61.3+111*6.13 简便计算
答
28.9*61.3111*61.3
=61.3*(28.9+111)
=61.3*139.9
=8575.87
是不是题目你打错了,数学题一般不会这么出。还有一种是
28.9*6.13+111*6.13
=6.13*(28.9+111)
=6.13*139.9
=857.587
答
28.9*61.3+111*6.13
=289*6.13+111*6.13
=6.13*(289+111)
=6.13*400
=613*4
=2452