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