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