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