Erbij en eraf tot 12
In de mix
|
1.
1 + 11 =
1
12
|
2.
5 – 1 =
1
4
|
3.
2 + 2 =
4
1
|
4.
9 + 0 =
1
9
|
|
5.
6 + 6 =
1
12
|
6.
7 – 1 =
1
6
|
7.
2 – 1 =
1
2
|
8.
7 – 0 =
1
7
|
|
9.
10 + 0 =
1
10
|
10.
11 – 8 =
3
1
|
11.
12 – 11 =
2
1
|
12.
2 – 0 =
2
1
|
|
13.
1 – 1 =
0
2
|
14.
6 – 4 =
2
1
|
15.
12 + 0 =
12
1
|
16.
9 + 1 =
1
10
|
|
17.
1 – 0 =
2
1
|
18.
7 – 7 =
0
2
|
19.
2 – 2 =
2
0
|
20.
5 + 0 =
5
1
|