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