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