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