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