39+41+43+45+47+49+51+53+55+57+59+61+63+65+67+69+71=()乘以()=(
39+41+43+45+47+49+51+53+55+57+59+61+63+65+67+69+71=()乘以()=(
四年级乘法分配律:49乘以 + 乘以51=36乘以(?+49)
A=B乘以57 A乘以2等于B乘以( )A乘以5等于B乘以( )A乘以()等于B乘以12 A乘以()等于B乘以29
【1.9+19%乘以(4.8-2.4)】除以(53乘以0.25+30.6乘以0.25)=?
17分之5乘以13分之6乘以(51乘以65)等于多少
6分之五乘以( )=( )乘以四分之三=( )乘以19=( )乘以十七分之二
解方程 24乘以5+5乘以(x-5)=(24乘以5 +5x)乘以0.9
9分之4乘以( )=( )乘以8=1=0.5乘以( )
3367乘以( )=555555 3367乘以( )=777777 3367乘以( )=999999
填空:4分之3乘以8=6乘以()=10乘以()
( )+49乘以( )=24 ( )乘以28--( )=21.6 要填一样的数
25乘以?乘以?等于(?乘以12)乘以(?乘以?