Oefen de erbijsommen tot 20
Erbijsommen
|
1.
3 + 1 =
|
2.
12 + 4 =
|
3.
4 + 0 =
|
|
4.
19 + 1 =
|
5.
7 + 0 =
|
6.
7 + 11 =
|
|
7.
7 + 0 =
|
8.
19 + 1 =
|
9.
1 + 1 =
|
|
10.
12 + 2 =
|
11.
4 + 5 =
|
12.
12 + 1 =
|
|
13.
14 + 4 =
|
14.
7 + 2 =
|
15.
5 + 14 =
|
|
16.
4 + 3 =
|
17.
6 + 10 =
|
18.
2 + 11 =
|
|
19.
8 + 6 =
|
20.
14 + 4 =
|
21.
1 + 5 =
|
|
22.
1 + 4 =
|
23.
7 + 11 =
|
24.
1 + 10 =
|
|
25.
7 + 1 =
|
26.
15 + 4 =
|
27.
10 + 0 =
|
|
28.
8 + 3 =
|
29.
5 + 15 =
|
30.
18 + 2 =
|
|
31.
7 + 10 =
|
32.
2 + 4 =
|
33.
10 + 6 =
|