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