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