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