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