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