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10以内分成与组成
(2的分成与组成)
2 2
0 2-0= 1 2-1= 0 1 2 0+2= 2 1+1 =
-1=1 2- =2 +0=2 1+ =2
( 3的分成与组成)
3 3 0 3-0= 1 3-1=
3 3 2 3-2= 3 3-3= 1 2 1+2= 2 1 2+1= 3 0 3+0=
1 2 2 1 3 0 1 2 3
3 3 3
-0=3 -1= 2 -2=1 3- =2 3- =1 3- =0 1+ =3 2+ = 3 3+ =3
(4的分成与组成)
4 4 0 4-0= 1 4-1=
4 4 4 2 4-2= 3 4-3= 4 4-4=
4 4 4 4 1 2 3 4 1 3 2 2 3 1 1 2 3 4 4 4 4 4 1 3 1+3= 2 2 2+3= 3 1 3+2= -0=4 -1=3 -2=2 -3= 1 4- =3 4- =2 4- =1 4- = 0 1+ =4 2+ = 4 3+ =4 4+ = 4
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(5的分成与组成)
5 5 5 1 5-1= 2 5-2= 3 5-3= 5 5 4 5-4= 5 5-5=
5 5 5 5 5 1 2 3 4 5
1 4 1+4= 2 3 2+3= 3 2 3+2= 4 1 4+1= 1 4 2 3 3 2 4 1 1 2 3 4 5 5 5 5 -0=5 -1=4 -2=3 -3= 2 5- =4 5- =3 5- =2 5- = 1 1+ =5 2+ = 5 3+ =5 4+ = 5
(6的分成与组成)
6 6 6 1 6-1= 2 6-2= 3 6-3= 6 6 6 4 6-4= 5 6-5= 6 6-6=
6 6 6 6 6 6 1 2 3 4 5 6
1 5 1+5= 2 4 2+4= 3 3 3+3= 4 2 4+2= 5 1 5+1= 1 5 2 4 3 3 4 2 5 1
0 1 2 3 4 5 6 6 6 6 6 6
-0=6 -1=5 -2=4 -3= 3 -4=2 -5=1 6- =5 6- =4 6- =3 6- = 6- =1 1+ =6 2+ = 6 3+ =6 4+ = 6
(7的分成与组成)
7 7 7 1 7-1= 2 7-2= 3 7-3=
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7 7 7 4 7-4= 5 7-5= 6 7-6=
7 7 7 7 7 7 7 1 2 3 4 5 6 7
1 6 1+6= 2 5 2+5= 3 4 3+4= 4 3 4+3= 5 2 5+2= 6 1 6+1=
1 6 2 5 3 4 4 3 5 2 6 1
0 1 2 3 4 5 6 7 7 7 7 7 7 7 7 7
-0=7 -1=6 -2=5 -3= 4 -4=3 -5=2 -6= 1 -7=0 7- =7 7- =6 7- =5 7- = 4 7- =3 7- = 2 7- =1 7- = 0 1+ =7 2+ = 7 3+ =7 4+ = 7 5+ =7 6+ = 7
自主练习:(有关7的加减法练习题-自己出题)
8 8 8 1 8-1= 2 8-2= 3 8-3= 8 8 8 4 8-4= 5 8-5= 6 8-6= 8 8 8 7 8-7= 8 8-8= 0 8-0=
8 8 8 8 8 8 8 8 1 2 3 4 5 6 7 8
8的分成与组成
1 7 1+7= 2 6 2+6= 3 5 3+5= 4 4 4+4= 5 3 5+3= 6 2 6+2= 7 1 7+1=
1 7 2 6 3 5 4 4 3 5 2 6 1 7 0 1 2 3 4 5 6 7 8 8 8 8 8 8 8 8
-0=8 -1=7 -2=6 -3= 5 -4=4 -5=3 -6= 2 -7=1