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