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