五年级数学下册6分数的加法和减法分数加减混合运算补充习题2新人教版.doc

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1分数的加法和减法分数加减混合运算用简便方法计算下面各题。(1) 87( 3) (2) 4 (3) 95 (1) 87( ) (2) 3 7 1 4 ( ) ( )(3) 95 81 7 4( ) ( )2答案提示:(1) 87( 3) 1 3(2) 7 4 ( 3 1)( ) 1 1(3) 95 8 7 43( 95 4)( 81 7)112

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