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