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