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