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