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