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