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