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