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