7的分解和组成,数一数:有几只公鸡？,,,,,,,,,,,,,,7,,6,1,7,,5,2,7,,4,3,7,,3,4,7,,2,5,7,,1,6,7的分解,,4,,3,,4,,1,,2,,4,,1,,3,,3,,2,7,5,4,5,6,,4,,2,3,,1,,1,,2,,3,,2,,6,4,3,5,,7,,5,6,,1,,4,,2,,5,,1,,2,5,2,4,3,,1,,2,7,,4,,7,,6,,7,,1,,7,,3,,3,1,6,4,7,,2,,5,,7,,3,,6,,5,,6,,4,,5,,7,,1,,6,4,1,2,2,5,7的组成及加减法,7,,6,1,图示 算式,1+6=7,6+1=7,7-1=6,7-6=1,试一试，你可以吗？,用1、5、6三个数写出四个算式7的组成及加减法,7,,5,2,图示 算式,2+5=7,5+2=7,7-2=5,7-5=2,试一试，你可以吗？,用2、4、6三个数写出四个算式7的组成及加减法,7,,4,3,图示 算式,3+4=7,4+3=7,7-3=4,7-4=3,,田字格里的写法,试一试,4+1= 2+4= 6-1=,想一想，算一算，在 里填上“ ”、“ ”、“ =”。
6-1 3 3+2 4 6-3 3 3+3 2+3 6-2 6-3 6-4 6-5,,,,,,,,动脑筋,作业,3+2= 6-1= 5-2= 4-1=,想一想，算一算，在 里填上“ ”、“ ”、“ =” 6-2 3 3+1 4 6-4 3 3+3 2+1 6-4 6-3 6-1 6-5,,,,,,,,试一试,1+ =6 6- =3 +2=6 -4=2 6- =0 5+ =6 -1=5 -2=4 4+ =6 +1=6 -5=1 +3=6,,5,,3,,4,,6,,6,,1,,6,,6,,2,,5,,6,,3,作业,计算 3+3= 1+4= 6-1= 3+2= 6-4= 6-5= 2+4= 4-1=,作业,1+ =6 6- =3 +2=6 -4=2 6- =0 5+ =6 +1=6 -5=1 +3=6,,5,,3,,4,,6,,6,,1,,5,,6,,3,作业2,+4 =5 5- =1 +3=5 -1=2 3- =0 2+ =3 5- =2 -1=3 3- =2,,,,,,,,,,看图列算式,2,3,5,+,=,5,3,2,-,=,2,2,4,+,=,4,1,3,-,=,作业,,,,,,,,？,有几颗大 ，,,有几颗小 ，,,一共有几颗 ？,,1,4,5,+,=,有几颗大 ，,,有几颗小 ，,,小 比大 多几颗 ？,,,4,1,3,-,=,大 比小 少几颗 ？,,,4,1,3,-,=,我有3个,我有2个,1、一共有多少个？,作业 列算式计算,2、男孩比女孩多几个？,3、女孩比男孩少几个？,,,,,,,,,,。