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