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