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