一年级数学下册第1单元加与减一1买铅笔同步练习(无答案)北师大版.doc

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1买铅笔同步练习1、圈一圈,算一算13-9 =( ) 16-9 =( )2、 算一算 9+3 = 9+9= 11-9= 14-9=12-9= 18-9= 17-9= 15-9=23、(1) ( ) 9 =( )(2) 17只( ) ( ) = ( )?

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