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