1x8+1=9,12x8+2=98,123x8+3=987,1234x8+4=9876照样子继续
1x8+1=9,12x8+2=98,123x8+3=987,1234x8+4=9876照样子继续
1X8+1=9,12X8+2=98,123x8+3=987,1234x8+4=9876找规律把下面,□填上数字
1x8+1=9 12x8+2=98 123x8+3=987 这三个算式有什么规律?
1x8+1=9 12x8+2=98 123x8+3=987 这三个算式有什么规律
1x8+1 =9 12x8+2=98 123x8+3=987 9x9-1=80 98x9-2=880 987x8-3=8
(125+6)X8=( )x8+( )x8
(0.25+1/4+l/2)x8=
3/4×27×5/18x8/9=?简便计算
观察下列式子:3²-1²=8=1x8,5²-3²=16=2x8 ,7²
7x8=56,表示( )
(5x-15)X8=72
25%x=16x8分之5,