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