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