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