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