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