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