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