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