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