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