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