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