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