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