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