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