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