省略乘号,写出下面各式.
(1)4×x= (2)6×a= (3)t×l2=
(4)t×t= (5)x×y= (6)6×n=
(7)c×1= (8)5×s= (9)(m+n)×6= .
省略乘号,写出下面各式.
(1)4×x= (2)6×a= (3)t×l2=
(4)t×t= (5)x×y= (6)6×n=
(7)c×1= (8)5×s= (9)(m+n)×6= .