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