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