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