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