(0.25+1/4+l/2)x8=
(0.25+1/4+l/2)x8=
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=987,1234x8+4=9876照样子继续
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
(125+6)X8=( )x8+( )x8
1x8+1 =9 12x8+2=98 123x8+3=987 9x9-1=80 98x9-2=880 987x8-3=8
2X4分之一+4X6分之一+6X8分之一+…+2010X2012分之一= n(n+1)分之一=
37.5%-3分之2x8分之3 0.875+4分之3+0.125+4分之1 0.75x8分之3+4分之1÷3分之8 递等
观察下列式子:3²-1²=8=1x8,5²-3²=16=2x8 ,7²
1/2x4+1/4x6+1/6x8+…+1/2010x2012 怎么算!
1/2x4+1/4x6+1/6x8+.+1/2010x2012