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 1+3= 2 2 2+3= 3 1 3+2=
1 3 2 2 3 1 1 2 3 4
4 4 4 4
-0=4 -1=3 -2=2 -3= 1 4- =3 4- =2 4- =1 4- = 0 1+ =4 2+ = 4 3+ =4 4+ = 4
(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=
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的分成与组成
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
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 8- =8 8- = 7 8- =6 8- = 5 8- =4 8- = 3 8- =2 8- = 1 1+ =8 2+ = 8 3+ =8 4+ = 8 5+ =8 6+ = 8 7+ =8 8+ = 8
自主练习;(有关8的加减法练习题-自己出题)
9的分成与组成
9 9 9
1 9-1= 2 9-2= 3 9-3=
9 9 9 4 9-4= 5 9-5= 6 9-6= 9 9 9 7 9-7= 8 9-8= 9 9-9= 9 9 0 9-0= 1 0 9-9=
9 9 9 9 9 9 9 9 9
1 2 3 4 5 6 7 8 9
1 8 1+8= 2 7 2+7= 3 6 3+6=