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