Oefen de erbijsommen tot 12
Erbijsommen
|
1.
1 + 11 =
12
2
16
14
|
2.
10 + 1 =
8
11
6
1
|
3.
7 + 1 =
2
6
10
8
|
4.
5 + 3 =
1
12
8
9
|
|
5.
4 + 0 =
3
5
4
1
|
6.
4 + 7 =
9
10
11
7
|
7.
10 + 1 =
8
13
12
11
|
8.
3 + 2 =
3
8
5
2
|
|
9.
2 + 1 =
8
5
7
3
|
10.
4 + 6 =
6
3
10
11
|
11.
2 + 3 =
2
9
5
4
|
12.
11 + 1 =
12
9
11
5
|
|
13.
1 + 3 =
4
9
2
6
|
14.
1 + 2 =
2
3
7
5
|
15.
9 + 2 =
2
7
3
11
|
16.
12 + 0 =
3
12
4
8
|
|
17.
7 + 5 =
3
1
12
5
|
18.
11 + 0 =
4
6
9
11
|
19.
2 + 2 =
5
2
4
1
|
20.
2 + 5 =
7
1
2
10
|