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