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