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