一年级数学上册第5单元6_10的认识和加减法《连加连减》教学课件新人教版.ppt

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连加 连减,回顾,想一想,填一填。 (1)62( ) 82 (2)43( ) 106 (3)55( )( ) (4)104( )( ),回顾,括号里填几? 4( )10 ( )310 5( )10 ( )110 ( )3 7 6( )9 ( )2 8 7( )7,先算( )加( )等于( )。 再算( )加( )等于( )。,5,2,7,7,1,8,8,5 + 2 + 1=( ),想一想:,7,图示表示先走了2只小鸡,接着又走了2只,那么还剩多少只小鸡?,一共有多少只小鸟?,4+2+3=,6,9, =,2,3,2,7,5,想一想,算一算。,923=,7,4,=,8,4,4,1,3,8,计算。 943 521 832 352 742 530 804 612,

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