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