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