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