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