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