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