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