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