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