得数是8的加法和相应的减法
一共有几人?
一共有8人
?
一共有8人
彩虹卡闯关
6 + 2 =
8
+ =
8
8 - 2 =
6
- =
2
6
2
6
8
1.
1
7
+ =
+ =
- =
- =
8
1
7
8
8
1
7
8
7
1
2.
+ =
4
4
8
- =
8
4
4
哪两张卡片上的数相加等于8?
4.
8-
2
5
1
6
7
3
4
8
6
3
7
2
1
5
4
0
5.
1+7 =
8
8-6 =
2
3+5 =
8
2+6 =
8
8-7 =
1
7+1 =
8
8-1 =
7
8-4 =
4
4+4 =
8
8-2 =
6
5+3 =
8
8-5 =
3
6.
8 - =
+ = 8