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