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