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