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