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