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