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