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