(2的分成与组成)
2 0 2-0=
2 1 12 1+1 =
1+ =2
2-1=
0 2 0+2=
-1=1 2- =2 +0=2
( 3的分成与组成)
3 31 3-1=
3 3 3-3=
0 3-0= 3 2 3-2=
1 2 1+2=
2 1 2+1= 3 0 3+0=
1 2 2 1 3 0 1 3 2 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 41 4-1=
0 4-0=
4 4 4 2 4-2= 3 4-3= 4 4-4= 4 1 4 2 4 3 4 4 1 3 1+3=
2 2 2+3=
1 2 3 1 3+2=
3 41 3 2 2 3 1
4 4 4 4
-0=4 -1=3 -2=2 -3= 1 4- =3 4- =2 4- =1 4- = 0 1+ =4 2+ = 4 5 1 5-1= 5 4 5-4= 5 1 5 2 3+ =4 4+ = 4
5 3 5-3=
(5的分成与组成)
5 2 5-2= 5 5 5-5=
5 4 5 5 5 3 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 5 2 5 3 5 45
-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 1 6-1= 6 2 6-2= 6 3 6-3= 6 6 4 6-4= 5 6-5=
6 6 6 6 6 6 1 2 3 4 5 6 1 5 1+5= 2 4 2+4= 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
6 6 6-6=
3 3 3+3=
-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 1 7-1= 7 7 2 7-2= 7 7 3 7-3=7 4 7-4= 5 7 7 7 7 1 2 3 4 1 6 1+6= 2 5 4 3 4+3= 5 2 1 6 2 5 3 4 4 3 7-5=
6 7-6=
7 7 7 5 6 7 2+5= 3 4 3+4=
5+2= 6 1 6+1=
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- = 01+ =7 2+ = 7 5+ =7 6+ = 7
3+ =7 4+ = 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 1 8-1= 2 8-2= 8 8 4 8-4= 5 8-5= 8 8 7 8-7= 8 8-8= 8 8 8 8 8 8 1 2 3 4 5 6 1 7 1+7= 2 6 2+6= 4 4 4+4= 5 3 5+3= 8 3 8-3=8 6 8-6=8 0 8-0=
8 8 7 8 3 5 3+5=
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- = 11+ =8 2+ = 8 5+ =8 6+ = 8
3+ =8 4+ = 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 1 9-1= 2 9-2= 9 9 4 9-4= 5 9-5= 9 9 7 9-7= 8 9-8= 9 9 0 9-0= 1 0 9-9=
9 9 9 9 9 9 1 2 3 4 5 6 1 8 1+8=
2 7 2+7= 9 3 9-3=
9 6 9-6=9 9 9-9=9 9 97 8 9 3 6 3+6=
4 5 4+5=
5 4 5+4= 6 3 6+3=
7 2 7+2=
8 1 8+1= 9 0 9+0=
1 8 2 7 3 6 4 5 5 4 3 6 2 7 1 8 -0=9 -4=5 -8=1 -1=8 -5=4 -9= 0
-2=7 -6= 3 -3= 6 -7=2
9- =9 9- = 8 9- =7 9- = 6
9- =5 9- = 4 9- =3 9- = 21+ =9 2+ = 9 5+ =9 6+ = 9
3+ =9 4+ = 9 7+ =9 8+ = 9
自主练习:(有关9的加减法练习-自己出题)
10的分成和组合
10 1 10-1= 10 4 10-4= 10 7 10-7= 10 0 10-0= 10 1 10 2 10 3 10 2 10-2= 10 5 10-5= 10 8 10-8= 10 10 10-10=
10 4 10 5 10 6 10 3 10-3=10 6 10-6=10 9 10-9=
10 7 10 8 109 1 9 1+9= 2 8 2+8= 3 7 3+7=
4 6 4+6= 5 5 5+5= 6 4 6+4=
7 3 7+3= 8 2 8+2= 9 1 9+1=
1 9 2 8 3 7 4 6 5 5 6 4 7 3 8 2 9 1 -0= -4= -8=
-1= -5= -9= -2= -6= -10= -3= -7=10- =9 10- = 8 10- =7 10- = 6 10- =5 10- = 4 10- =3 10- = 2 1+ =10 2+ = 10
3+ =10 4+ = 10
5+ =10 6+ = 10 9+ =10 7+ =10 8+ = 10
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