3( )7 * ( )= 2( )9( ) 竖式计算3( )7* ( )______2( )9( )竖式计算

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3( )7 * ( )= 2( )9( ) 竖式计算3( )7* ( )______2( )9( )竖式计算

3( )7 * ( )= 2( )9( ) 竖式计算3( )7* ( )______2( )9( )竖式计算
3( )7 * ( )= 2( )9( ) 竖式计算
3( )7
* ( )
______
2( )9( )
竖式计算

3( )7 * ( )= 2( )9( ) 竖式计算3( )7* ( )______2( )9( )竖式计算
357*7=2499